From da7a932923fb6ad4110c7ec144cb60ef2b7b2796 Mon Sep 17 00:00:00 2001
From: Jacob Janzen <jacob.a.s.janzen@gmail.com>
Date: Sat, 28 Sep 2024 11:03:57 -0500
Subject: merge emacs into the hive

---
 Makefile                                           |  29 +-
 common/.config/emacs/feed.org.org                  |  38 --
 common/.config/emacs/force-custom-file.el.org      |   8 -
 common/.config/emacs/init.el.org                   |  25 --
 common/.config/emacs/languages.el.org              | 141 --------
 common/.config/emacs/package-setup.el.org          |  25 --
 common/.config/emacs/tools.el.org                  | 391 ---------------------
 common/.config/emacs/user-interface.el.org         | 131 -------
 nixos/.config/emacs                                |   1 -
 nixos/.flake/home/programs/core.nix.org            |   1 +
 nixos/.flake/home/programs/emacs/core.nix.org      |  25 ++
 nixos/.flake/home/programs/emacs/feed.org.org      |  38 ++
 .../home/programs/emacs/force-custom-file.el.org   |   8 +
 nixos/.flake/home/programs/emacs/languages.el.org  | 148 ++++++++
 .../home/programs/emacs/package-setup.el.org       |  25 ++
 nixos/.flake/home/programs/emacs/tools.el.org      | 391 +++++++++++++++++++++
 .../home/programs/emacs/user-interface.el.org      | 131 +++++++
 17 files changed, 788 insertions(+), 768 deletions(-)
 delete mode 100644 common/.config/emacs/feed.org.org
 delete mode 100644 common/.config/emacs/force-custom-file.el.org
 delete mode 100644 common/.config/emacs/init.el.org
 delete mode 100644 common/.config/emacs/languages.el.org
 delete mode 100644 common/.config/emacs/package-setup.el.org
 delete mode 100644 common/.config/emacs/tools.el.org
 delete mode 100644 common/.config/emacs/user-interface.el.org
 delete mode 120000 nixos/.config/emacs
 create mode 100644 nixos/.flake/home/programs/emacs/core.nix.org
 create mode 100644 nixos/.flake/home/programs/emacs/feed.org.org
 create mode 100644 nixos/.flake/home/programs/emacs/force-custom-file.el.org
 create mode 100644 nixos/.flake/home/programs/emacs/languages.el.org
 create mode 100644 nixos/.flake/home/programs/emacs/package-setup.el.org
 create mode 100644 nixos/.flake/home/programs/emacs/tools.el.org
 create mode 100644 nixos/.flake/home/programs/emacs/user-interface.el.org

diff --git a/Makefile b/Makefile
index 3270048..34ce4bf 100644
--- a/Makefile
+++ b/Makefile
@@ -1,20 +1,25 @@
-.PHONY: install update rollback
+.PHONY: install update rollback nixos-update nixos-install
 
-SRCDIR = ./nixos
+SYSTEM = $(shell uname -n)
+SRCDIR = ./$(SYSTEM)
 DSTDIR = $(HOME)
 
 SOURCES := $(shell find -L $(SRCDIR)/ -type f)
 CONFIGS := $(subst $(SRCDIR)/,$(DSTDIR)/,$(SOURCES:%.org=%))
 
+UPDATE_TARGET :=
+INSTALL_TARGET :=
+
+ifeq ($(SYSTEM), nixos)
+	UPDATE_TARGET += nixos-update
+	INSTALL_TARGET += nixos-install
+endif
+
 all: update
 
-update: install
-	nix flake update $(DSTDIR)/.flake
-	cp $(DSTDIR)/.flake/flake.lock $(SRCDIR)/.flake
-	sudo nixos-rebuild switch --flake $(DSTDIR)/.flake
+update: install $(UPDATE_TARGET)
 
-install: $(CONFIGS)
-	sudo nixos-rebuild switch --flake $(DSTDIR)/.flake
+install: $(CONFIGS) $(INSTALL_TARGET)
 
 $(DSTDIR)/%: $(SRCDIR)/%.org
 	mkdir -p $(dir $@)
@@ -23,3 +28,11 @@ $(DSTDIR)/%: $(SRCDIR)/%.org
 $(DSTDIR)/%: $(SRCDIR)/%
 	mkdir -p $(dir $@)
 	cp $< $@
+
+nixos-update: install
+	nix flake update $(DSTDIR)/.flake
+	cp $(DSTDIR)/.flake/flake.lock $(SRCDIR)/.flake
+	sudo nixos-rebuild switch --flake $(DSTDIR)/.flake
+
+nixos-install: $(CONFIGS)
+	sudo nixos-rebuild switch --flake $(DSTDIR)/.flake
diff --git a/common/.config/emacs/feed.org.org b/common/.config/emacs/feed.org.org
deleted file mode 100644
index d93d32e..0000000
--- a/common/.config/emacs/feed.org.org
+++ /dev/null
@@ -1,38 +0,0 @@
-#+title: Emacs RSS Feed
-
-#+begin_src org :tangle ~/.config/emacs/feed.org :mkdirp yes
-  ,* Blogs
-  :PROPERTIES:
-  :ID: elfeed
-  :END:
-  ,** Journalism :journalism:
-  ,*** [[https://waxy.org/feed/][Waxy.org]]
-  ,*** [[https://pluralistic.net/feed/][Cory Doctorow]] :technology:software:fiction:
-  ,** Computer Science :cs:
-  ,*** [[https://a.exozy.me/index.xml][Some Random Website]] :math:algorithms:fiction:
-  ,** Technology :technology:
-  ,*** [[https://ciechanow.ski/atom.xml][Bartosz Ciechanowshki]]
-  ,*** [[https://www.citationneeded.news/rss/][Citation Needed]]
-  ,*** [[https://www.lilysthings.org/blog/rss.xml][The Cool Blog]]
-  ,** Software :software:
-  ,*** [[https://ersei.net/en/blog.atom][Ersei]]
-  ,*** [[https://lilysthings.org/blog/rss.xml][Lily's Things]]
-  ,*** [[https://ntietz.com/atom.xml][Technically a Blog]]
-  ,*** [[https://alexwlchan.net/atom.xml][Alex Chan]]
-  ,*** [[https://eaton-works.com/feed.atom][Eaton Works]] :hacking:
-  ,*** [[https://computer.rip/rss.xml][Computer's Are Bad]] :technology:
-  ,*** [[https://mark.stosberg.com/rss/][Mark Stosberg]] :biking:
-  ,*** [[https://maia.crimew.gay/feed.xml][Maia Crimew]] :internet:hacking:
-  ,*** [[https://drewdevault.com/blog/index.xml][Drew DeVault]]
-  ,** Comics :comic:
-  ,*** [[https://xkcd.com/atom.xml][XKCD]]
-  ,** People I know
-  ,*** [[https://www.weavingwatersexpedition.com/news?format=rss][Weaving Waters Expedition]] :journalism:
-  ,*** [[https://pinkish.bearblog.dev/feed/][Pinkish]] :software:
-  ,*** [[https://jjanzen.ca/rss.xml][Me]] :software:review:
-  ,** Internet Infrastructure :internet:software:
-  ,*** [[https://daniel.haxx.se/blog/feed/][cURL]]
-  ,*** [[https://blog.archive.org/feed/][Archive.org]]
-  ,** Reviews :review:
-  ,*** [[https://mountainofink.com/?format=rss][Mountain of Ink]]
-#+end_src
diff --git a/common/.config/emacs/force-custom-file.el.org b/common/.config/emacs/force-custom-file.el.org
deleted file mode 100644
index 8b8a418..0000000
--- a/common/.config/emacs/force-custom-file.el.org
+++ /dev/null
@@ -1,8 +0,0 @@
-#+title: Emacs Force the Usage of a =custom.el= File
-
-Force the usage of a =custom.el= file for customizations instead of placing them in =init.el=.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/force-custom-file.el :mkdirp yes
-  (setq custom-file (concat user-emacs-directory "custom.el"))
-  (when (file-exists-p custom-file)
-    (load custom-file))
-#+end_src
diff --git a/common/.config/emacs/init.el.org b/common/.config/emacs/init.el.org
deleted file mode 100644
index 74566c3..0000000
--- a/common/.config/emacs/init.el.org
+++ /dev/null
@@ -1,25 +0,0 @@
-#+title: Emacs Configuration
-Load [[./force-custom-file.org][force-custom-file.el]] to ensure that =init.el= is not polluted by customizations.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/init.el :mkdirp yes
-  (load "~/.config/emacs/force-custom-file.el")
-#+end_src
-
-Load [[./package-setup.org][package-setup.el]] to allow for package installation.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/init.el :mkdirp yes
-  (load "~/.config/emacs/package-setup.el")
-#+end_src
-
-Load [[./user-interface.org][user-interface.el]] to clean up Emacs' user interface and make it look the way I like.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/init.el :mkdirp yes
-  (load "~/.config/emacs/user-interface.el")
-#+end_src
-
-Load [[./tools.org][tools.el]] to add functionality to Emacs.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/init.el :mkdirp yes
-  (load "~/.config/emacs/tools.el")
-#+end_src
-
-Load [[./languages.org][languages.el]] to add language and language server protocol support.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/init.el :mkdirp yes
-  (load "~/.config/emacs/languages.el")
-#+end_src
diff --git a/common/.config/emacs/languages.el.org b/common/.config/emacs/languages.el.org
deleted file mode 100644
index 0c4fe7b..0000000
--- a/common/.config/emacs/languages.el.org
+++ /dev/null
@@ -1,141 +0,0 @@
-#+title: Emacs Programming Language Setup
-
-* Shell Script
-Run =eglot= on shell script files.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
-  (add-hook 'sh-mode-hook 'jj/eglot-setup)
-#+end_src
-
-* C
-Run =eglot= on C and C++ files.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
-  (add-hook 'c-mode-hook 'jj/eglot-setup)
-  (add-hook 'c++-mode-hook 'jj/eglot-setup)
-  (add-hook 'cc-mode-hook 'jj/eglot-setup)
-#+end_src
-
-Run =eglot= on CMake files.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
-  (use-package cmake-mode
-    :init
-    (add-hook 'cmake-mode-hook 'jj/eglot-setup))
-#+end_src
-
-Turn off C mode in =lex= and =yacc= files.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
-  (add-to-list 'auto-mode-alist '("\\.l$" . prog-mode))
-  (add-to-list 'auto-mode-alist '("\\.y$" . prog-mode))
-#+end_src
-
-* Web
-Run =eglot= on HTML files.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
-  (add-hook 'html-mode-hook 'jj/eglot-setup)
-#+end_src
-
-Run =eglot= on CSS files.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
-  (add-hook 'css-mode-hook 'jj/eglot-setup)
-#+end_src
-
-Run =eglot= on JavaScript files.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
-  (add-hook 'js-json-mode-hook 'jj/eglot-setup)
-  (add-hook 'js-mode-hook 'jj/eglot-setup)
-#+end_src
-
-* Python
-Run =eglot= on Python files.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
-  (add-hook 'python-mode-hook 'jj/eglot-setup)
-#+end_src
-
-* Go
-Install Go support and run =eglot= on Go files.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
-  (use-package go-mode
-    :init
-    (add-hook 'go-mode-hook 'jj/eglot-setup))
-#+end_src
-
-Get documentation for Go variables, functions, and arguments.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
-  (use-package go-eldoc
-    :init
-    (add-hook 'go-mode-hook 'go-eldoc-setup))
-#+end_src
-
-Automatically generate tests in Go.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
-  (use-package go-gen-test)
-#+end_src
-
-Get refactoring tools from =go-guru=.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
-  (use-package go-guru
-    :hook (go-mode . go-guru-hl-identifier-mode))
-#+end_src
-
-* Lua
-Install Lua support and run =eglot= on Lua files.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
-  (use-package lua-mode
-    :init
-    (add-hook 'lua-mode-hook 'jj/eglot-setup))
-#+end_src
-
-Better Lisp editing with =lispy=.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
-  (use-package lispy
-    :hook (emacs-lisp-mode . lispy-mode))
-  (use-package lispyville
-    :after lispy
-    :hook (lispy-mode . lispyville-mode))
-#+end_src
-
-Better parentheses handling in lisp with =parinfer-rust-mode=.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
-  (use-package parinfer-rust-mode
-    :hook (emacs-lisp-mode . parinfer-rust-mode)
-    :init
-    (setq parinfer-rust-auto-download t))
-#+end_src
-
-* Markdown
-Install Markdown support and run =eglot= on Markdown files.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
-  (use-package markdown-mode
-    :init
-    (add-hook 'markdown-mode-hook 'jj/eglot-setup))
-#+end_src
-
-* LaTeX
-Run =eglot= on TeX files.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
-  (add-hook 'tex-mode-hook 'jj/eglot-setup)
-#+end_src
-
-Use AUCTeX for extra LaTeX integration.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
-  (use-package auctex
-    :config
-    (add-hook 'LaTeX-mode-hook 'jj/eglot-setup)
-    (add-hook 'LaTeX-mode-hook
-            (lambda ()
-              (put 'LaTeX-mode 'eglot-language-id "latex"))))
-#+end_src
-
-Use CDLaTeX for environment and macro insertion.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
-  (use-package cdlatex
-    :config
-    (add-hook 'LaTeX-mode-hook #'turn-on-cdlatex))
-#+end_src
-
-* YAML
-Install YAML support and run =eglot= on YAML files.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
-  (use-package yaml-mode
-    :init
-    (add-hook 'yaml-mode-hook 'jj/eglot-setup))
-#+end_src
diff --git a/common/.config/emacs/package-setup.el.org b/common/.config/emacs/package-setup.el.org
deleted file mode 100644
index 6ed238c..0000000
--- a/common/.config/emacs/package-setup.el.org
+++ /dev/null
@@ -1,25 +0,0 @@
-#+title: Emacs Package Setup
-Install =straight= for better package management.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/package-setup.el :mkdirp yes
-  (defvar bootstrap-version)
-  (let ((bootstrap-file
-         (expand-file-name
-          "straight/repos/straight.el/bootstrap.el"
-          (or (bound-and-true-p straight-base-dir)
-              user-emacs-directory)))
-        (bootstrap-version 7))
-    (unless (file-exists-p bootstrap-file)
-      (with-current-buffer
-          (url-retrieve-synchronously
-           "https://raw.githubusercontent.com/radian-software/straight.el/develop/install.el"
-           'silent 'inhibit-cookies)
-        (goto-char (point-max))
-        (eval-print-last-sexp)))
-    (load bootstrap-file nil 'nomessage))
-#+end_src
-
-Install =use-package= for declarative package installation. Make =use-package= default to =ensure t= so that packages are enabled if they are declared.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/package-setup.el :mkdirp yes
-  (straight-use-package 'use-package)
-  (setq straight-use-package-by-default t)
-#+end_src
diff --git a/common/.config/emacs/tools.el.org b/common/.config/emacs/tools.el.org
deleted file mode 100644
index d52c1b6..0000000
--- a/common/.config/emacs/tools.el.org
+++ /dev/null
@@ -1,391 +0,0 @@
-#+title: Emacs Tool Setup
-
-* Vi Keybindings
-Use =vi= keybindings with =evil=. Set the undo system to =undo-fu=. Wrapped lines can be moved between with =j= and =k=.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package evil
-    :init
-    (setq evil-want-keybinding nil)
-    :config
-    (evil-mode)
-    (evil-global-set-key 'motion "j" 'evil-next-visual-line)
-    (evil-global-set-key 'motion "k" 'evil-previous-visual-line)
-    (evil-global-set-key 'motion (kbd "RET") nil)
-    :custom
-    (evil-undo-system 'undo-fu))
-#+end_src
-
-Use =evil-collection= to include =vi= keybindings in extra modes.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package evil-collection
-    :after evil
-    :config
-    (evil-collection-init))
-#+end_src
-
-* Undo
-Better undo with =undo-fu=.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package undo-fu)
-#+end_src
-
-Make undo persistent when closing Emacs with =undo-fu-session=.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package undo-fu-session
-    :init (undo-fu-session-global-mode 1))
-#+end_src
-
-* Lookup
-Better lookup with =dumb-jump=.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package dumb-jump
-    :init (add-hook 'xref-backend-functions #'dumb-jump-xref-activate))
-#+end_src
-
-* Version Control
-Install Magit for Git integration.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package magit)
-#+end_src
-
-* Remote Editing
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-(setq tramp-default-method "ssh")
-#+end_src
-
-* Document Viewing
-Replace =DocView= with a better document viewer from =pdf-tools=.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package pdf-tools
-    :config
-    (pdf-tools-install)
-    :init
-    (add-hook 'pdf-view-mode-hook #'(lambda () (display-line-numbers-mode -1)))
-    (add-hook 'TeX-after-compilation-finished-functions
-              #'TeX-revert-document-buffer)
-    :config
-    (setq TeX-view-program-selection '((output-pdf "PDF Tools"))
-          TeX-view-program-list '(("PDF Tools" TeX-pdf-tools-sync-view))
-          TeX-source-correlate-start-server t))
-#+end_src
-
-Save place in PDFs with =saveplace-pdf-view=.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package saveplace-pdf-view
-    :config (save-place-mode 1))
-#+end_src
-
-* Org-Mode
-Ensure that =org= is set up before any of this.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package org)
-#+end_src
-Set my =org-mode= directory.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (setq org-directory "~/org")
-#+end_src
-
-Hide emphasis markers because I can see if something is *bold*, /italic/, or =monospace= without needing to see the markers.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (setq org-hide-emphasis-markers t)
-#+end_src
-
-Set up nicer looking bullet points.
-- they look like circles
-- instead of hyphens
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (font-lock-add-keywords 'org-mode
-                          '(("^ *\\([-]\\) "
-                             (0 (prog1 () (compose-region (match-beginning 1) (match-end 1) "•"))))))
-#+end_src
-
-Set up fonts. Don't use =monospace= by default. Do use it where necessary though. Also, make different heading levels different sizes.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (add-hook 'org-mode-hook 'variable-pitch-mode)
-  (custom-set-faces
-   `(variable-pitch ((t :font ,jj/var-font)))
-   `(fixed-pitch ((t :font ,jj/mono-font)))
-   '(org-block ((t (:inherit fixed-pitch))))
-   '(org-code ((t (:inherit (shadow fixed-pitch)))))
-   '(org-document-info-keyword ((t (:inherit (shadow fixed-pitch)))))
-   '(org-meta-line ((t (:inherit (font-lock-comment-face fixed-pitch)))))
-   '(org-verbatim ((t (:inherit (shadow fixed-pitch)))))
-   '(org-table ((t (:inherit (shadow fixed-pitch)))))
-   '(org-document-title ((t (:inherit title :height 2.0 :underline nil))))
-   '(org-level-1 ((t (:inherit outline-1 :weight: bold :height 1.75))))
-   '(org-level-2 ((t (:inherit outline-2 :weight: bold :height 1.5))))
-   '(org-level-2 ((t (:inherit outline-3 :weight: bold :height 1.25))))
-   '(org-level-2 ((t (:inherit outline-4 :weight: bold :height 1.1))))
-   '(org-level-4 ((t (:inherit outline-4 :height 1.1))))
-   '(org-level-5 ((t (:inherit outline-5 :height 1.0))))
-   )
-#+end_src
-
-Wrap lines and centre the view to make for a nicer reading experience.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package visual-fill-column)
-  (add-hook 'org-mode-hook 'visual-line-mode)
-  (add-hook 'org-mode-hook #'(lambda () (display-line-numbers-mode -1)))
-  (defun jj/org-mode-visual-fill ()
-    (setq visual-fill-column-width 100
-          visual-fill-column-center-text t)
-     (visual-fill-column-mode 1))
-  (add-hook 'org-mode-hook #'jj/org-mode-visual-fill)
-#+end_src
-
-Increase the size of LaTeX previews.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (setq org-format-latex-options (plist-put org-format-latex-options :scale 2.0))
-#+end_src
-
-Follow links with the return key.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (setq org-return-follows-link t)
-#+end_src
-
-Tangle on save.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (defun org-babel-tangle-config ()
-    (when (string-suffix-p ".org" (buffer-file-name))
-      (org-babel-tangle)))
-  (add-hook 'org-mode-hook
-    (lambda ()
-      (add-hook 'after-save-hook #'org-babel-tangle-config)))
-#+end_src
-
-Enable Org Crypt.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (org-crypt-use-before-save-magic)
-  (setq org-tags-exclude-from-inheritance '("crypt"))
-  (setq org-crypt-key nil)
-  (setq auto-save-default nil)
-#+end_src
-
-* Shell
-Use =eshell= as an integrated shell.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package eshell)
-  (global-set-key (kbd "C-c e") 'eshell)
-#+end_src
-
-* Language Servers
-Add =eglot= keybindings.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (global-set-key (kbd "C-c r") 'eglot-rename)
-  (global-set-key (kbd "C-c a") 'eglot-code-actions)
-#+end_src
-
-Install =tree-sitter=.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package tree-sitter)
-  (use-package tree-sitter-langs)
-#+end_src
-
-Define function to set up =eglot= automatically.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (defun jj/eglot-setup ()
-    (eglot-ensure)
-    (tree-sitter-mode 1)
-    (tree-sitter-hl-mode 1))
-#+end_src
-
-* Completions
-Use company for completions with no delay, starting immediately after first character is typed.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package company
-    :config
-    (add-hook 'after-init-hook 'global-company-mode)
-    (setq company-idle-delay 0
-          company-minimum-prefix-length 1
-          company-selection-wrap-around t))
-#+end_src
-
-Use =vertico= as a completion user interface.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package vertico
-    :custom
-    (vertico-cycle t)
-    :init
-    (vertico-mode))
-#+end_src
-
-Use =orderless= to allow typing any portion of a word that you want to search for.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package orderless
-    :ensure t
-    :custom
-    (completion-styles '(orderless basic))
-    (completion-category-overrides '((file (styles basic partial-completion)))))
-#+end_src
-
-Get descriptions of items in =vertico= with =marginalia=.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package marginalia
-    :bind (:map minibuffer-local-map
-           ("M-A" . marginalia-cycle))
-    :init
-    (marginalia-mode))
-#+end_src
-
-Get nerd font icons in completions.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package nerd-icons-completion
-    :config
-    (nerd-icons-completion-mode))
-#+end_src
-
-Use consult with =vertico= for extra functionality to various functions.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package consult
-    :bind (
-           ("C-c M-x" . consult-mode-command)
-           ("C-c h" . consult-history)
-           ("C-c k" . consult-kmacro)
-           ("C-c m" . consult-man)
-           ("C-c i" . consult-info)
-           ([remap Info-search] . consult-info)
-           ("C-x M-:" . consult-complex-command)
-           ("C-x b" . consult-buffer)
-           ("C-x 4 b" . consult-buffer-other-window)
-           ("C-x 5 b" . consult-buffer-other-frame)
-           ("C-x t b" . consult-buffer-other-tab)
-           ("C-x r b" . consult-bookmark)
-           ("C-x p b" . consult-project-buffer)
-           ("M-#" . consult-register-load)
-           ("M-'" . consult-register-store)
-           ("C-M-#" . consult-register)
-           ("M-y" . consult-yank-pop)
-           ("M-g e" . consult-compile-error)
-           ("M-g f" . consult-flycheck)
-           ("M-g g" . consult-goto-line)
-           ("M-g M-g" . consult-goto-line)
-           ("M-g o" . consult-outline)
-           ("M-g m" . consult-mark)
-           ("M-g k" . consult-global-mark)
-           ("M-g i" . consult-imenu)
-           ("M-g I" . consult-imenu-multi)
-           ("M-s d" . consult-fd)
-           ("M-s c" . consult-locate)
-           ("M-s g" . consult-grep)
-           ("M-s G" . consult-git-grep)
-           ("M-s r" . consult-ripgrep)
-           ("M-s l" . consult-line)
-           ("M-s L" . consult-line-multi)
-           ("M-s k" . consult-keep-lines)
-           ("M-s u" . consult-focus-lines)
-           ("M-s e" . consult-isearch-history)
-           :map isearch-mode-map
-           ("M-e" . consult-isearch-history)
-           ("M-s e" . consult-isearch-history)
-           ("M-s l" . consult-line)
-           ("M-s L" . consult-line-multi)
-           :map minibuffer-local-map
-           ("M-s" . consult-history)
-           ("M-r" . consult-history))
-    :hook (completion-list-mode . consult-preview-at-point-mode)
-    :init
-    (setq register-preview-delay 0.5
-          register-preview-function #'consult-register-format)
-    (advice-add #'register-preview :override #'consult-register-window)
-    (setq xref-show-xrefs-function #'consult-xref
-          xref-show-definitions-function #'consult-xref)
-    :config
-    (consult-customize
-     consult-theme :preview-key '(:debounce 0.2 any)
-     consult-ripgrep consult-git-grep consult-grep
-     consult-bookmark consult-recent-file consult-xref
-     consult--source-bookmark consult--source-file-register
-     consult--source-recent-file consult--source-project-recent-file
-     :preview-key '(:debounce 0.4 any))
-    (setq consult-narrow-key "<"))
-#+end_src
-
-Use Flycheck for syntax checking.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package flycheck
-    :config
-    (add-hook 'after-init-hook #'global-flycheck-mode))
-#+end_src
-
-Use Flyspell for spell checking.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (dolist (hook '(text-mode-hook))
-    (add-hook hook (lambda () (flyspell-mode 1))))
-  (use-package flyspell-correct
-    :after flyspell
-    :bind (:map flyspell-mode-map ("C-;" . flyspell-correct-wrapper)))
-#+end_src
-
-* Snippets
-Use =yasnippet= for snippets so I don't need to type as much.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package yasnippet
-    :init
-    (yas-global-mode 1)
-    :config
-    (global-set-key (kbd "C-c s") 'yas-insert-snippet))
-#+end_src
-
-Install snippet collection for =yasnippet=.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package yasnippet-snippets)
-#+end_src
-
-* Formatting
-Automatically format with Apheleia and =clang-format=.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package apheleia
-    :init (apheleia-global-mode +1))
-  (use-package clang-format)
-#+end_src
-
-* RSS
-Use Emacs as an RSS feed with =elfeed=.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package elfeed
-    :config
-    (global-set-key (kbd "C-c f") 'elfeed)
-    (global-set-key (kbd "C-c M-f") 'elfeed-update))
-#+end_src
-
-Make =elfeed= more powerful with =elfeed-goodies=.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package elfeed-goodies
-    :after elfeed
-    :config
-    (elfeed-goodies/setup))
-#+end_src
-
-Store my feed in Org-mode [[./feed.org][here]].
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package elfeed-org
-    :config
-    (elfeed-org)
-    (setq rmh-elfeed-org-files (list "~/.config/emacs/feed.org")))
-#+end_src
-
-* Deft
-Use the Deft package to manage notes.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package deft
-    :config
-    (global-set-key (kbd "C-c d") 'deft)
-    (setq deft-directory "~/notes/"
-          deft-default-extension "org"))
-#+end_src
-
-* Reference Management
-Use Biblio and Citar to manage citations.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
-  (use-package biblio)
-  (use-package citar
-    :custom
-    (citar-bibliography '("~/bib/references.bib"))
-    :hook
-    (LaTeX-mode . citar-capf-setup)
-    (org-mode . citar-capf-setup))
-  (use-package citar-embark
-    :after citar embark
-    :no-require
-    :config (citar-embark-mode))
-#+end_src
diff --git a/common/.config/emacs/user-interface.el.org b/common/.config/emacs/user-interface.el.org
deleted file mode 100644
index ff4bd34..0000000
--- a/common/.config/emacs/user-interface.el.org
+++ /dev/null
@@ -1,131 +0,0 @@
-#+title: Emacs User Interface
-
-* Theming
-Set up Source Code Pro with Nerd Font patches as default font and Computer Modern as a variable pitch font.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
-  (defvar jj/mono-font)
-  (defvar jj/var-font)
-  (pcase system-type
-    (`gnu/linux
-     (when (eq (system-name) "gentoo"))
-     (setq jj/mono-font "SauceCodePro Nerd Font-11")
-     (setq jj/var-font "CMU Serif-14"))
-    (`darwin
-      (setq jj/mono-font "SauceCodePro Nerd Font-14:weight=thin")
-      (setq jj/var-font "CMU Serif-18")))
-  (add-to-list 'default-frame-alist
-               `(font . ,jj/mono-font))
-#+end_src
-
-Use my custom Doom Disco light theme.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
-  (use-package doom-themes
-    :straight (doom-themes :type git :host github :repo "doomemacs/themes"
-                           :fork (:host github
-                                  :repo "JacobJanzen/emacs-doom-themes"))
-    :config
-    (setq doom-themes-enable-bold t
-          doom-themes-enable-italic t)
-    (load-theme 'doom-disco t)
-    (doom-themes-org-config))
-
-(add-to-list 'default-frame-alist '(alpha-background . 90))
-#+end_src
-
-Use =doom-modeline= for a nicer modeline.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
-  (use-package doom-modeline
-    :init (doom-modeline-mode 1))
-#+end_src
-
-Remove the title bar.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
-  (add-to-list 'default-frame-alist '(undecorated . t))
-#+end_src
-
-
-* Clean UI
-Disable the Emacs start screen and make the =scratch= buffer default to empty.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
-  (setq inhibit-startup-screen t)
-  (setq initial-scratch-message nil)
-#+end_src
-
-Disable scroll bar, tool bar, and menu bar.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
-  (scroll-bar-mode -1)
-  (tool-bar-mode -1)
-  (menu-bar-mode -1)
-#+end_src
-
-* Fancy Stuff
-Use line numbers by default.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
-  (global-display-line-numbers-mode 1)
-#+end_src
-
-Highlight changes for an operation with =evil-goggles=.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
-  (use-package evil-goggles
-    :after evil
-    :config
-    (evil-goggles-mode)
-    (evil-goggles-use-diff-faces))
-#+end_src
-
-Install nerd font icons.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
-  (use-package nerd-icons)
-#+end_src
-
-Scroll one line at a time.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
-  (setq scroll-conservatively most-positive-fixnum)
-#+end_src
-
-Create parent directories when they don't yet exist.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
-  (defun jj/create-non-existent-directory ()
-  (let ((parent-directory (file-name-directory buffer-file-name)))
-    (when (and (not (file-exists-p parent-directory))
-               (y-or-n-p (format "Directory `%s' does not exist! Create it?" parent-directory)))
-      (make-directory parent-directory t))))
-  (add-to-list 'find-file-not-found-functions #'jj/create-non-existent-directory)
-#+end_src
-
-
-* Whitespace Management
-Use spaces over tabs and set tab width to 4.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
-  (setq-default indent-tabs-mode nil)
-  (setq tab-width 4
-    c-basic-offset tab-width)
-#+end_src
-
-Delete trailing whitespace on save.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
-  (defun jj/before-save-hook ()
-    (unless (eql (with-current-buffer (current-buffer) major-mode)
-                  'markdown-mode)
-      (delete-trailing-whitespace)))
-  (add-hook 'before-save-hook #'jj/before-save-hook)
-#+end_src
-
-* Backup Management
-Don't create backup files.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
-  (setq make-backup-files nil)
-#+end_src
-
-* Customize =dired=
-Use nerd font icons in =dired=.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
-  (use-package nerd-icons-dired
-    :hook (dired-mode . nerd-icons-dired-mode))
-#+end_src
-
-Use colours in =dired= with =diredfl=.
-#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
-  (use-package diredfl
-    :init (diredfl-global-mode 1))
-#+end_src
diff --git a/nixos/.config/emacs b/nixos/.config/emacs
deleted file mode 120000
index f4e5e56..0000000
--- a/nixos/.config/emacs
+++ /dev/null
@@ -1 +0,0 @@
-../../common/.config/emacs
\ No newline at end of file
diff --git a/nixos/.flake/home/programs/core.nix.org b/nixos/.flake/home/programs/core.nix.org
index e42b91f..0e0e8c5 100644
--- a/nixos/.flake/home/programs/core.nix.org
+++ b/nixos/.flake/home/programs/core.nix.org
@@ -6,6 +6,7 @@ This is the core of my program configuration. This file installs programs that d
 
   {
     imports = [
+      ./emacs/core.nix
       ./fastfetch.nix
       ./foot.nix
       ./git.nix
diff --git a/nixos/.flake/home/programs/emacs/core.nix.org b/nixos/.flake/home/programs/emacs/core.nix.org
new file mode 100644
index 0000000..b1632d9
--- /dev/null
+++ b/nixos/.flake/home/programs/emacs/core.nix.org
@@ -0,0 +1,25 @@
+#+title: Emacs Configuration
+
+#+begin_src nix :tangle ~/.flake/home/programs/emacs/core.nix :mkdirp yes
+  { config, pkgs, ... }:
+
+  {
+    home.file = {
+      "./.config/emacs/force-custom-file.el".source = ./force-custom-file.el;
+      "./.config/emacs/package-setup.el".source = ./package-setup.el;
+      "./.config/emacs/user-interface.el".source = ./user-interface.el;
+      "./.config/emacs/tools.el".source = ./tools.el;
+      "./.config/emacs/languages.el".source = ./languages.el;
+    };
+    programs.emacs = {
+      enable = true;
+      extraConfig = ''
+        (load "~/.config/emacs/force-custom-file.el")
+        (load "~/.config/emacs/package-setup.el")
+        (load "~/.config/emacs/user-interface.el")
+        (load "~/.config/emacs/tools.el")
+        (load "~/.config/emacs/languages.el")
+      '';
+    };
+  }
+#+end_src
diff --git a/nixos/.flake/home/programs/emacs/feed.org.org b/nixos/.flake/home/programs/emacs/feed.org.org
new file mode 100644
index 0000000..d93d32e
--- /dev/null
+++ b/nixos/.flake/home/programs/emacs/feed.org.org
@@ -0,0 +1,38 @@
+#+title: Emacs RSS Feed
+
+#+begin_src org :tangle ~/.config/emacs/feed.org :mkdirp yes
+  ,* Blogs
+  :PROPERTIES:
+  :ID: elfeed
+  :END:
+  ,** Journalism :journalism:
+  ,*** [[https://waxy.org/feed/][Waxy.org]]
+  ,*** [[https://pluralistic.net/feed/][Cory Doctorow]] :technology:software:fiction:
+  ,** Computer Science :cs:
+  ,*** [[https://a.exozy.me/index.xml][Some Random Website]] :math:algorithms:fiction:
+  ,** Technology :technology:
+  ,*** [[https://ciechanow.ski/atom.xml][Bartosz Ciechanowshki]]
+  ,*** [[https://www.citationneeded.news/rss/][Citation Needed]]
+  ,*** [[https://www.lilysthings.org/blog/rss.xml][The Cool Blog]]
+  ,** Software :software:
+  ,*** [[https://ersei.net/en/blog.atom][Ersei]]
+  ,*** [[https://lilysthings.org/blog/rss.xml][Lily's Things]]
+  ,*** [[https://ntietz.com/atom.xml][Technically a Blog]]
+  ,*** [[https://alexwlchan.net/atom.xml][Alex Chan]]
+  ,*** [[https://eaton-works.com/feed.atom][Eaton Works]] :hacking:
+  ,*** [[https://computer.rip/rss.xml][Computer's Are Bad]] :technology:
+  ,*** [[https://mark.stosberg.com/rss/][Mark Stosberg]] :biking:
+  ,*** [[https://maia.crimew.gay/feed.xml][Maia Crimew]] :internet:hacking:
+  ,*** [[https://drewdevault.com/blog/index.xml][Drew DeVault]]
+  ,** Comics :comic:
+  ,*** [[https://xkcd.com/atom.xml][XKCD]]
+  ,** People I know
+  ,*** [[https://www.weavingwatersexpedition.com/news?format=rss][Weaving Waters Expedition]] :journalism:
+  ,*** [[https://pinkish.bearblog.dev/feed/][Pinkish]] :software:
+  ,*** [[https://jjanzen.ca/rss.xml][Me]] :software:review:
+  ,** Internet Infrastructure :internet:software:
+  ,*** [[https://daniel.haxx.se/blog/feed/][cURL]]
+  ,*** [[https://blog.archive.org/feed/][Archive.org]]
+  ,** Reviews :review:
+  ,*** [[https://mountainofink.com/?format=rss][Mountain of Ink]]
+#+end_src
diff --git a/nixos/.flake/home/programs/emacs/force-custom-file.el.org b/nixos/.flake/home/programs/emacs/force-custom-file.el.org
new file mode 100644
index 0000000..8b8a418
--- /dev/null
+++ b/nixos/.flake/home/programs/emacs/force-custom-file.el.org
@@ -0,0 +1,8 @@
+#+title: Emacs Force the Usage of a =custom.el= File
+
+Force the usage of a =custom.el= file for customizations instead of placing them in =init.el=.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/force-custom-file.el :mkdirp yes
+  (setq custom-file (concat user-emacs-directory "custom.el"))
+  (when (file-exists-p custom-file)
+    (load custom-file))
+#+end_src
diff --git a/nixos/.flake/home/programs/emacs/languages.el.org b/nixos/.flake/home/programs/emacs/languages.el.org
new file mode 100644
index 0000000..3ee63e0
--- /dev/null
+++ b/nixos/.flake/home/programs/emacs/languages.el.org
@@ -0,0 +1,148 @@
+#+title: Emacs Programming Language Setup
+
+* Shell Script
+Run =eglot= on shell script files.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
+  (add-hook 'sh-mode-hook 'jj/eglot-setup)
+#+end_src
+
+* C
+Run =eglot= on C and C++ files.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
+  (add-hook 'c-mode-hook 'jj/eglot-setup)
+  (add-hook 'c++-mode-hook 'jj/eglot-setup)
+  (add-hook 'cc-mode-hook 'jj/eglot-setup)
+#+end_src
+
+Run =eglot= on CMake files.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
+  (use-package cmake-mode
+    :init
+    (add-hook 'cmake-mode-hook 'jj/eglot-setup))
+#+end_src
+
+Turn off C mode in =lex= and =yacc= files.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
+  (add-to-list 'auto-mode-alist '("\\.l$" . prog-mode))
+  (add-to-list 'auto-mode-alist '("\\.y$" . prog-mode))
+#+end_src
+
+* Web
+Run =eglot= on HTML files.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
+  (add-hook 'html-mode-hook 'jj/eglot-setup)
+#+end_src
+
+Run =eglot= on CSS files.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
+  (add-hook 'css-mode-hook 'jj/eglot-setup)
+#+end_src
+
+Run =eglot= on JavaScript files.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
+  (add-hook 'js-json-mode-hook 'jj/eglot-setup)
+  (add-hook 'js-mode-hook 'jj/eglot-setup)
+#+end_src
+
+* Python
+Run =eglot= on Python files.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
+  (add-hook 'python-mode-hook 'jj/eglot-setup)
+#+end_src
+
+* Go
+Install Go support and run =eglot= on Go files.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
+  (use-package go-mode
+    :init
+    (add-hook 'go-mode-hook 'jj/eglot-setup))
+#+end_src
+
+Get documentation for Go variables, functions, and arguments.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
+  (use-package go-eldoc
+    :init
+    (add-hook 'go-mode-hook 'go-eldoc-setup))
+#+end_src
+
+Automatically generate tests in Go.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
+  (use-package go-gen-test)
+#+end_src
+
+Get refactoring tools from =go-guru=.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
+  (use-package go-guru
+    :hook (go-mode . go-guru-hl-identifier-mode))
+#+end_src
+
+* Lua
+Install Lua support and run =eglot= on Lua files.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
+  (use-package lua-mode
+    :init
+    (add-hook 'lua-mode-hook 'jj/eglot-setup))
+#+end_src
+
+Better Lisp editing with =lispy=.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
+  (use-package lispy
+    :hook (emacs-lisp-mode . lispy-mode))
+  (use-package lispyville
+    :after lispy
+    :hook (lispy-mode . lispyville-mode))
+#+end_src
+
+Better parentheses handling in lisp with =parinfer-rust-mode=.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
+  (use-package parinfer-rust-mode
+    :hook (emacs-lisp-mode . parinfer-rust-mode)
+    :init
+    (setq parinfer-rust-auto-download t))
+#+end_src
+
+* Markdown
+Install Markdown support and run =eglot= on Markdown files.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
+  (use-package markdown-mode
+    :init
+    (add-hook 'markdown-mode-hook 'jj/eglot-setup))
+#+end_src
+
+* LaTeX
+Run =eglot= on TeX files.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
+  (add-hook 'tex-mode-hook 'jj/eglot-setup)
+#+end_src
+
+Use AUCTeX for extra LaTeX integration.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
+  (use-package auctex
+    :config
+    (add-hook 'LaTeX-mode-hook 'jj/eglot-setup)
+    (add-hook 'LaTeX-mode-hook
+            (lambda ()
+              (put 'LaTeX-mode 'eglot-language-id "latex"))))
+#+end_src
+
+Use CDLaTeX for environment and macro insertion.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
+  (use-package cdlatex
+    :config
+    (add-hook 'LaTeX-mode-hook #'turn-on-cdlatex))
+#+end_src
+
+* YAML
+Install YAML support and run =eglot= on YAML files.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
+  (use-package yaml-mode
+    :init
+    (add-hook 'yaml-mode-hook 'jj/eglot-setup))
+#+end_src
+
+* Nix
+Install =nix= support and run =eglot= on =nix= files.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/languages.el :mkdirp yes
+  (use-package nix-mode
+    :mode "\\.nix\\'")
+#+end_src
diff --git a/nixos/.flake/home/programs/emacs/package-setup.el.org b/nixos/.flake/home/programs/emacs/package-setup.el.org
new file mode 100644
index 0000000..6ed238c
--- /dev/null
+++ b/nixos/.flake/home/programs/emacs/package-setup.el.org
@@ -0,0 +1,25 @@
+#+title: Emacs Package Setup
+Install =straight= for better package management.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/package-setup.el :mkdirp yes
+  (defvar bootstrap-version)
+  (let ((bootstrap-file
+         (expand-file-name
+          "straight/repos/straight.el/bootstrap.el"
+          (or (bound-and-true-p straight-base-dir)
+              user-emacs-directory)))
+        (bootstrap-version 7))
+    (unless (file-exists-p bootstrap-file)
+      (with-current-buffer
+          (url-retrieve-synchronously
+           "https://raw.githubusercontent.com/radian-software/straight.el/develop/install.el"
+           'silent 'inhibit-cookies)
+        (goto-char (point-max))
+        (eval-print-last-sexp)))
+    (load bootstrap-file nil 'nomessage))
+#+end_src
+
+Install =use-package= for declarative package installation. Make =use-package= default to =ensure t= so that packages are enabled if they are declared.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/package-setup.el :mkdirp yes
+  (straight-use-package 'use-package)
+  (setq straight-use-package-by-default t)
+#+end_src
diff --git a/nixos/.flake/home/programs/emacs/tools.el.org b/nixos/.flake/home/programs/emacs/tools.el.org
new file mode 100644
index 0000000..d52c1b6
--- /dev/null
+++ b/nixos/.flake/home/programs/emacs/tools.el.org
@@ -0,0 +1,391 @@
+#+title: Emacs Tool Setup
+
+* Vi Keybindings
+Use =vi= keybindings with =evil=. Set the undo system to =undo-fu=. Wrapped lines can be moved between with =j= and =k=.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package evil
+    :init
+    (setq evil-want-keybinding nil)
+    :config
+    (evil-mode)
+    (evil-global-set-key 'motion "j" 'evil-next-visual-line)
+    (evil-global-set-key 'motion "k" 'evil-previous-visual-line)
+    (evil-global-set-key 'motion (kbd "RET") nil)
+    :custom
+    (evil-undo-system 'undo-fu))
+#+end_src
+
+Use =evil-collection= to include =vi= keybindings in extra modes.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package evil-collection
+    :after evil
+    :config
+    (evil-collection-init))
+#+end_src
+
+* Undo
+Better undo with =undo-fu=.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package undo-fu)
+#+end_src
+
+Make undo persistent when closing Emacs with =undo-fu-session=.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package undo-fu-session
+    :init (undo-fu-session-global-mode 1))
+#+end_src
+
+* Lookup
+Better lookup with =dumb-jump=.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package dumb-jump
+    :init (add-hook 'xref-backend-functions #'dumb-jump-xref-activate))
+#+end_src
+
+* Version Control
+Install Magit for Git integration.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package magit)
+#+end_src
+
+* Remote Editing
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+(setq tramp-default-method "ssh")
+#+end_src
+
+* Document Viewing
+Replace =DocView= with a better document viewer from =pdf-tools=.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package pdf-tools
+    :config
+    (pdf-tools-install)
+    :init
+    (add-hook 'pdf-view-mode-hook #'(lambda () (display-line-numbers-mode -1)))
+    (add-hook 'TeX-after-compilation-finished-functions
+              #'TeX-revert-document-buffer)
+    :config
+    (setq TeX-view-program-selection '((output-pdf "PDF Tools"))
+          TeX-view-program-list '(("PDF Tools" TeX-pdf-tools-sync-view))
+          TeX-source-correlate-start-server t))
+#+end_src
+
+Save place in PDFs with =saveplace-pdf-view=.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package saveplace-pdf-view
+    :config (save-place-mode 1))
+#+end_src
+
+* Org-Mode
+Ensure that =org= is set up before any of this.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package org)
+#+end_src
+Set my =org-mode= directory.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (setq org-directory "~/org")
+#+end_src
+
+Hide emphasis markers because I can see if something is *bold*, /italic/, or =monospace= without needing to see the markers.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (setq org-hide-emphasis-markers t)
+#+end_src
+
+Set up nicer looking bullet points.
+- they look like circles
+- instead of hyphens
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (font-lock-add-keywords 'org-mode
+                          '(("^ *\\([-]\\) "
+                             (0 (prog1 () (compose-region (match-beginning 1) (match-end 1) "•"))))))
+#+end_src
+
+Set up fonts. Don't use =monospace= by default. Do use it where necessary though. Also, make different heading levels different sizes.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (add-hook 'org-mode-hook 'variable-pitch-mode)
+  (custom-set-faces
+   `(variable-pitch ((t :font ,jj/var-font)))
+   `(fixed-pitch ((t :font ,jj/mono-font)))
+   '(org-block ((t (:inherit fixed-pitch))))
+   '(org-code ((t (:inherit (shadow fixed-pitch)))))
+   '(org-document-info-keyword ((t (:inherit (shadow fixed-pitch)))))
+   '(org-meta-line ((t (:inherit (font-lock-comment-face fixed-pitch)))))
+   '(org-verbatim ((t (:inherit (shadow fixed-pitch)))))
+   '(org-table ((t (:inherit (shadow fixed-pitch)))))
+   '(org-document-title ((t (:inherit title :height 2.0 :underline nil))))
+   '(org-level-1 ((t (:inherit outline-1 :weight: bold :height 1.75))))
+   '(org-level-2 ((t (:inherit outline-2 :weight: bold :height 1.5))))
+   '(org-level-2 ((t (:inherit outline-3 :weight: bold :height 1.25))))
+   '(org-level-2 ((t (:inherit outline-4 :weight: bold :height 1.1))))
+   '(org-level-4 ((t (:inherit outline-4 :height 1.1))))
+   '(org-level-5 ((t (:inherit outline-5 :height 1.0))))
+   )
+#+end_src
+
+Wrap lines and centre the view to make for a nicer reading experience.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package visual-fill-column)
+  (add-hook 'org-mode-hook 'visual-line-mode)
+  (add-hook 'org-mode-hook #'(lambda () (display-line-numbers-mode -1)))
+  (defun jj/org-mode-visual-fill ()
+    (setq visual-fill-column-width 100
+          visual-fill-column-center-text t)
+     (visual-fill-column-mode 1))
+  (add-hook 'org-mode-hook #'jj/org-mode-visual-fill)
+#+end_src
+
+Increase the size of LaTeX previews.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (setq org-format-latex-options (plist-put org-format-latex-options :scale 2.0))
+#+end_src
+
+Follow links with the return key.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (setq org-return-follows-link t)
+#+end_src
+
+Tangle on save.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (defun org-babel-tangle-config ()
+    (when (string-suffix-p ".org" (buffer-file-name))
+      (org-babel-tangle)))
+  (add-hook 'org-mode-hook
+    (lambda ()
+      (add-hook 'after-save-hook #'org-babel-tangle-config)))
+#+end_src
+
+Enable Org Crypt.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (org-crypt-use-before-save-magic)
+  (setq org-tags-exclude-from-inheritance '("crypt"))
+  (setq org-crypt-key nil)
+  (setq auto-save-default nil)
+#+end_src
+
+* Shell
+Use =eshell= as an integrated shell.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package eshell)
+  (global-set-key (kbd "C-c e") 'eshell)
+#+end_src
+
+* Language Servers
+Add =eglot= keybindings.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (global-set-key (kbd "C-c r") 'eglot-rename)
+  (global-set-key (kbd "C-c a") 'eglot-code-actions)
+#+end_src
+
+Install =tree-sitter=.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package tree-sitter)
+  (use-package tree-sitter-langs)
+#+end_src
+
+Define function to set up =eglot= automatically.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (defun jj/eglot-setup ()
+    (eglot-ensure)
+    (tree-sitter-mode 1)
+    (tree-sitter-hl-mode 1))
+#+end_src
+
+* Completions
+Use company for completions with no delay, starting immediately after first character is typed.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package company
+    :config
+    (add-hook 'after-init-hook 'global-company-mode)
+    (setq company-idle-delay 0
+          company-minimum-prefix-length 1
+          company-selection-wrap-around t))
+#+end_src
+
+Use =vertico= as a completion user interface.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package vertico
+    :custom
+    (vertico-cycle t)
+    :init
+    (vertico-mode))
+#+end_src
+
+Use =orderless= to allow typing any portion of a word that you want to search for.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package orderless
+    :ensure t
+    :custom
+    (completion-styles '(orderless basic))
+    (completion-category-overrides '((file (styles basic partial-completion)))))
+#+end_src
+
+Get descriptions of items in =vertico= with =marginalia=.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package marginalia
+    :bind (:map minibuffer-local-map
+           ("M-A" . marginalia-cycle))
+    :init
+    (marginalia-mode))
+#+end_src
+
+Get nerd font icons in completions.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package nerd-icons-completion
+    :config
+    (nerd-icons-completion-mode))
+#+end_src
+
+Use consult with =vertico= for extra functionality to various functions.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package consult
+    :bind (
+           ("C-c M-x" . consult-mode-command)
+           ("C-c h" . consult-history)
+           ("C-c k" . consult-kmacro)
+           ("C-c m" . consult-man)
+           ("C-c i" . consult-info)
+           ([remap Info-search] . consult-info)
+           ("C-x M-:" . consult-complex-command)
+           ("C-x b" . consult-buffer)
+           ("C-x 4 b" . consult-buffer-other-window)
+           ("C-x 5 b" . consult-buffer-other-frame)
+           ("C-x t b" . consult-buffer-other-tab)
+           ("C-x r b" . consult-bookmark)
+           ("C-x p b" . consult-project-buffer)
+           ("M-#" . consult-register-load)
+           ("M-'" . consult-register-store)
+           ("C-M-#" . consult-register)
+           ("M-y" . consult-yank-pop)
+           ("M-g e" . consult-compile-error)
+           ("M-g f" . consult-flycheck)
+           ("M-g g" . consult-goto-line)
+           ("M-g M-g" . consult-goto-line)
+           ("M-g o" . consult-outline)
+           ("M-g m" . consult-mark)
+           ("M-g k" . consult-global-mark)
+           ("M-g i" . consult-imenu)
+           ("M-g I" . consult-imenu-multi)
+           ("M-s d" . consult-fd)
+           ("M-s c" . consult-locate)
+           ("M-s g" . consult-grep)
+           ("M-s G" . consult-git-grep)
+           ("M-s r" . consult-ripgrep)
+           ("M-s l" . consult-line)
+           ("M-s L" . consult-line-multi)
+           ("M-s k" . consult-keep-lines)
+           ("M-s u" . consult-focus-lines)
+           ("M-s e" . consult-isearch-history)
+           :map isearch-mode-map
+           ("M-e" . consult-isearch-history)
+           ("M-s e" . consult-isearch-history)
+           ("M-s l" . consult-line)
+           ("M-s L" . consult-line-multi)
+           :map minibuffer-local-map
+           ("M-s" . consult-history)
+           ("M-r" . consult-history))
+    :hook (completion-list-mode . consult-preview-at-point-mode)
+    :init
+    (setq register-preview-delay 0.5
+          register-preview-function #'consult-register-format)
+    (advice-add #'register-preview :override #'consult-register-window)
+    (setq xref-show-xrefs-function #'consult-xref
+          xref-show-definitions-function #'consult-xref)
+    :config
+    (consult-customize
+     consult-theme :preview-key '(:debounce 0.2 any)
+     consult-ripgrep consult-git-grep consult-grep
+     consult-bookmark consult-recent-file consult-xref
+     consult--source-bookmark consult--source-file-register
+     consult--source-recent-file consult--source-project-recent-file
+     :preview-key '(:debounce 0.4 any))
+    (setq consult-narrow-key "<"))
+#+end_src
+
+Use Flycheck for syntax checking.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package flycheck
+    :config
+    (add-hook 'after-init-hook #'global-flycheck-mode))
+#+end_src
+
+Use Flyspell for spell checking.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (dolist (hook '(text-mode-hook))
+    (add-hook hook (lambda () (flyspell-mode 1))))
+  (use-package flyspell-correct
+    :after flyspell
+    :bind (:map flyspell-mode-map ("C-;" . flyspell-correct-wrapper)))
+#+end_src
+
+* Snippets
+Use =yasnippet= for snippets so I don't need to type as much.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package yasnippet
+    :init
+    (yas-global-mode 1)
+    :config
+    (global-set-key (kbd "C-c s") 'yas-insert-snippet))
+#+end_src
+
+Install snippet collection for =yasnippet=.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package yasnippet-snippets)
+#+end_src
+
+* Formatting
+Automatically format with Apheleia and =clang-format=.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package apheleia
+    :init (apheleia-global-mode +1))
+  (use-package clang-format)
+#+end_src
+
+* RSS
+Use Emacs as an RSS feed with =elfeed=.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package elfeed
+    :config
+    (global-set-key (kbd "C-c f") 'elfeed)
+    (global-set-key (kbd "C-c M-f") 'elfeed-update))
+#+end_src
+
+Make =elfeed= more powerful with =elfeed-goodies=.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package elfeed-goodies
+    :after elfeed
+    :config
+    (elfeed-goodies/setup))
+#+end_src
+
+Store my feed in Org-mode [[./feed.org][here]].
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package elfeed-org
+    :config
+    (elfeed-org)
+    (setq rmh-elfeed-org-files (list "~/.config/emacs/feed.org")))
+#+end_src
+
+* Deft
+Use the Deft package to manage notes.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package deft
+    :config
+    (global-set-key (kbd "C-c d") 'deft)
+    (setq deft-directory "~/notes/"
+          deft-default-extension "org"))
+#+end_src
+
+* Reference Management
+Use Biblio and Citar to manage citations.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/tools.el :mkdirp yes
+  (use-package biblio)
+  (use-package citar
+    :custom
+    (citar-bibliography '("~/bib/references.bib"))
+    :hook
+    (LaTeX-mode . citar-capf-setup)
+    (org-mode . citar-capf-setup))
+  (use-package citar-embark
+    :after citar embark
+    :no-require
+    :config (citar-embark-mode))
+#+end_src
diff --git a/nixos/.flake/home/programs/emacs/user-interface.el.org b/nixos/.flake/home/programs/emacs/user-interface.el.org
new file mode 100644
index 0000000..ff4bd34
--- /dev/null
+++ b/nixos/.flake/home/programs/emacs/user-interface.el.org
@@ -0,0 +1,131 @@
+#+title: Emacs User Interface
+
+* Theming
+Set up Source Code Pro with Nerd Font patches as default font and Computer Modern as a variable pitch font.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
+  (defvar jj/mono-font)
+  (defvar jj/var-font)
+  (pcase system-type
+    (`gnu/linux
+     (when (eq (system-name) "gentoo"))
+     (setq jj/mono-font "SauceCodePro Nerd Font-11")
+     (setq jj/var-font "CMU Serif-14"))
+    (`darwin
+      (setq jj/mono-font "SauceCodePro Nerd Font-14:weight=thin")
+      (setq jj/var-font "CMU Serif-18")))
+  (add-to-list 'default-frame-alist
+               `(font . ,jj/mono-font))
+#+end_src
+
+Use my custom Doom Disco light theme.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
+  (use-package doom-themes
+    :straight (doom-themes :type git :host github :repo "doomemacs/themes"
+                           :fork (:host github
+                                  :repo "JacobJanzen/emacs-doom-themes"))
+    :config
+    (setq doom-themes-enable-bold t
+          doom-themes-enable-italic t)
+    (load-theme 'doom-disco t)
+    (doom-themes-org-config))
+
+(add-to-list 'default-frame-alist '(alpha-background . 90))
+#+end_src
+
+Use =doom-modeline= for a nicer modeline.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
+  (use-package doom-modeline
+    :init (doom-modeline-mode 1))
+#+end_src
+
+Remove the title bar.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
+  (add-to-list 'default-frame-alist '(undecorated . t))
+#+end_src
+
+
+* Clean UI
+Disable the Emacs start screen and make the =scratch= buffer default to empty.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
+  (setq inhibit-startup-screen t)
+  (setq initial-scratch-message nil)
+#+end_src
+
+Disable scroll bar, tool bar, and menu bar.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
+  (scroll-bar-mode -1)
+  (tool-bar-mode -1)
+  (menu-bar-mode -1)
+#+end_src
+
+* Fancy Stuff
+Use line numbers by default.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
+  (global-display-line-numbers-mode 1)
+#+end_src
+
+Highlight changes for an operation with =evil-goggles=.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
+  (use-package evil-goggles
+    :after evil
+    :config
+    (evil-goggles-mode)
+    (evil-goggles-use-diff-faces))
+#+end_src
+
+Install nerd font icons.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
+  (use-package nerd-icons)
+#+end_src
+
+Scroll one line at a time.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
+  (setq scroll-conservatively most-positive-fixnum)
+#+end_src
+
+Create parent directories when they don't yet exist.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
+  (defun jj/create-non-existent-directory ()
+  (let ((parent-directory (file-name-directory buffer-file-name)))
+    (when (and (not (file-exists-p parent-directory))
+               (y-or-n-p (format "Directory `%s' does not exist! Create it?" parent-directory)))
+      (make-directory parent-directory t))))
+  (add-to-list 'find-file-not-found-functions #'jj/create-non-existent-directory)
+#+end_src
+
+
+* Whitespace Management
+Use spaces over tabs and set tab width to 4.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
+  (setq-default indent-tabs-mode nil)
+  (setq tab-width 4
+    c-basic-offset tab-width)
+#+end_src
+
+Delete trailing whitespace on save.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
+  (defun jj/before-save-hook ()
+    (unless (eql (with-current-buffer (current-buffer) major-mode)
+                  'markdown-mode)
+      (delete-trailing-whitespace)))
+  (add-hook 'before-save-hook #'jj/before-save-hook)
+#+end_src
+
+* Backup Management
+Don't create backup files.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
+  (setq make-backup-files nil)
+#+end_src
+
+* Customize =dired=
+Use nerd font icons in =dired=.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
+  (use-package nerd-icons-dired
+    :hook (dired-mode . nerd-icons-dired-mode))
+#+end_src
+
+Use colours in =dired= with =diredfl=.
+#+begin_src emacs-lisp :tangle ~/.config/emacs/user-interface.el :mkdirp yes
+  (use-package diredfl
+    :init (diredfl-global-mode 1))
+#+end_src
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