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https://github.com/nix-community/home-manager
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fish: autogenerate completions from man pages
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1 changed files with 73 additions and 1 deletions
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@ -21,6 +21,15 @@ in
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programs.fish = {
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enable = mkEnableOption "fish friendly interactive shell";
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package = mkOption {
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default = pkgs.fish;
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defaultText = "pkgs.fish";
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description = ''
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The fish package to install. May be used to change the version.
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'';
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type = types.package;
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};
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shellAliases = mkOption {
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default = {};
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description = ''
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@ -74,7 +83,70 @@ in
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};
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config = mkIf cfg.enable {
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home.packages = [ pkgs.fish ];
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home.packages = [ cfg.package ];
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xdg.dataFile."fish/home-manager_generated_completions".source =
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let
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# paths later in the list will overwrite those already linked
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destructiveSymlinkJoin =
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args_@{ name
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, paths
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, preferLocalBuild ? true
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, allowSubstitutes ? false
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, postBuild ? ""
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, ...
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}:
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let
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args = removeAttrs args_ [ "name" "postBuild" ]
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// { inherit preferLocalBuild allowSubstitutes; }; # pass the defaults
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in pkgs.runCommand name args
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''
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mkdir -p $out
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for i in $paths; do
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if [ -z "$(find $i -prune -empty)" ]; then
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cp -srf $i/* $out
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fi
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done
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${postBuild}
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'';
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generateCompletions = package: pkgs.runCommand
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"${package.name}-fish-completions"
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{
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src = package;
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nativeBuildInputs = [ pkgs.python2 ];
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buildInputs = [ cfg.package ];
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preferLocalBuild = true;
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allowSubstitutes = false;
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}
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''
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mkdir -p $out
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if [ -d $src/share/man ]; then
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find $src/share/man -type f \
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| xargs python ${cfg.package}/share/fish/tools/create_manpage_completions.py --directory $out \
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> /dev/null
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fi
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'';
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in
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destructiveSymlinkJoin {
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name = "${config.home.username}-fish-completions";
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paths =
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let
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cmp = (a: b: (a.meta.priority or 0) > (b.meta.priority or 0));
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in
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map generateCompletions (sort cmp config.home.packages);
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};
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programs.fish.interactiveShellInit = ''
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# add completions generated by Home Manager to $fish_complete_path
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begin
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set -l joined (string join " " $fish_complete_path)
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set -l prev_joined (string replace --regex "[^\s]*generated_completions.*" "" $joined)
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set -l post_joined (string replace $prev_joined "" $joined)
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set -l prev (string split " " (string trim $prev_joined))
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set -l post (string split " " (string trim $post_joined))
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set fish_complete_path $prev "${config.xdg.dataHome}/fish/home-manager_generated_completions" $post
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end
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'';
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xdg.configFile."fish/config.fish".text = ''
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# ~/.config/fish/config.fish: DO NOT EDIT -- this file has been generated automatically.
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