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flake-nixinator/home/modules/emacs.nix
2022-08-11 14:35:36 +02:00

130 lines
5.2 KiB
Nix

# https://nixos.org/manual/nixos/stable/index.html#sec-writing-modules
# This is a function with arguments
{ config, lib, mylib, pkgs, ... }:
# We add stuff from lib to our namespace (mkOption...)
with lib;
with mylib.modules;
let
# This is the current state of the option that this module defines
# We use it to determine if the config should be changed below
cfg = config.modules.emacs;
in {
imports = [ ];
# Options is a vector of options this module defines
# This module defines only the "emacs" option and suboptions "enable" and "doom"
options.modules.emacs = {
enable = mkEnableOpt "Emacs module";
# TODO: Use an enum for this not individual options
nativeComp = mkBoolOpt false "Use Emacs 28.x branch with native comp support";
pgtkNativeComp = mkBoolOpt false "Use Emacs 29.x branch with native comp and pure gtk support";
doom = {
enable = mkEnableOpt "Doom Emacs framework";
autoSync = mkBoolOpt false "Sync Doom Emacs on nixos-rebuild";
autoUpgrade = mkBoolOpt false "Upgrade Doom Emacs on nixos-rebuild";
};
};
# Config is the merged set of all module configurations
# Here we define what happens to the config if the module is active (but only if the module is active)
# Since this module is for HomeManager, config is not the system config
# Attribute sets like config can be defined multiple times (every module defines a different config), on
# building the config they are merged
# Because config depends on itself recursively (through cfg) we use mkIf instead of the normal if...then...else,
# as it delays the evaluation (the if is moved inside the assignments inside the set)
# mkIf can only be used in the config section (like mkMerge, mkForce and co)
config = mkIf cfg.enable {
assertions = [
(mkIf cfg.nativeComp {
assertion = !cfg.pgtkNativeComp;
message = "Can't enable both nativeComp and pgtkNativeComp!";
})
(mkIf cfg.pgtkNativeComp {
assertion = !cfg.nativeComp;
message = "Can't enable both nativeComp and pgtkNativeComp!";
})
];
# What home packages should be enabled
home.packages = with pkgs; builtins.concatLists [
(optionals cfg.nativeComp [ ((emacsPackagesFor emacsNativeComp).emacsWithPackages (epkgs: [ epkgs.vterm ])) ])
(optionals cfg.pgtkNativeComp [ ((emacsPackagesFor emacsPgtkNativeComp).emacsWithPackages (epkgs: [ epkgs.vterm ])) ])
# TODO: Check what hlissner has enabled
(optionals cfg.doom.enable [
emacs-all-the-icons-fonts
(ripgrep.override { withPCRE2 = true; })
fd
zstd
sqlite # Org roam
inkscape # Org latex preview
graphviz # Org graphviz support
gnuplot # Org gnuplot support
pandoc # Org export formats
maim
bashInteractive # For keychain
# withPackages expects a function that gets all the packages as argument and returns a list with the packages we want
(python310.withPackages (ppkgs: [ ppkgs.pygments ])) # Latex minted
# nixfmt # This belongs in specific flake.nix
# shellcheck # This belongs in specific flake.nix
# TODO: Use LaTeX module instead
texlive.combined.scheme-medium
])
];
home.sessionPath = mkIf cfg.doom.enable [ "${config.home.homeDirectory}/.emacs.d/bin" ];
# Note: Don't do it this way as the config becomes immutable
# We tell HomeManager where the config files belong
# home.file.".config/doom" = {
# # With onChange you even could rebuild doom emacs when rebuilding HomeManager but I don't want this to become too slow
# recursive = true; # is a directory
# source = ../../config/doom;
# };
home.activation = mkMerge [
# The parantheses around mkIf are needed for precedence in this case
(mkIf cfg.doom.enable {
# If doom is enabled we want to clone the framework
# The activation script is being run when home-manager rebuilds
# Because we write to the filesystem, this script has to be run after HomeManager's writeBoundary
installDoomEmacs = hm.dag.entryAfter [ "writeBoundary" ] ''
if [ ! -d "${config.home.homeDirectory}/.emacs.d" ]; then
git clone --depth=1 --single-branch "https://github.com/doomemacs/doomemacs" "${config.home.homeDirectory}/.emacs.d"
fi
'';
# With this approach we keep the config mutable as it is not copied and linked from store
linkDoomConfig = hm.dag.entryAfter [ "writeBoundary" "installDoomEmacs" ]
(mkLink "${config.home.homeDirectory}/NixFlake/config/doom" "${config.home.homeDirectory}/.config/doom");
})
(mkElse cfg.doom.enable {
unlinkDoomConfig = hm.dag.entryAfter [ "writeBoundary" "installDoomEmacs" ]
(mkUnlink "${config.home.homeDirectory}/.config/doom");
})
(mkIf (cfg.doom.enable && cfg.doom.autoSync) {
syncDoomEmacs = hm.dag.entryAfter [ "writeBoundary" "linkDoomConfig" ] ''
${config.home.homeDirectory}/.emacs.d/bin/doom sync
'';
})
(mkIf (cfg.doom.enable && cfg.doom.autoUpgrade) {
upgradeDoomEmacs = hm.dag.entryAfter [ "writeBoundary" "linkDoomConfig" ] ''
${config.home.homeDirectory}/.emacs.d/bin/doom upgrade -!
'';
})
];
};
}