mirror of
https://github.com/nix-community/home-manager.git
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012cfcc44a
Git package can be made nullable now, but module is written with expectation of its availability. Signed-off-by: Austin Horstman <khaneliman12@gmail.com>
107 lines
3 KiB
Nix
107 lines
3 KiB
Nix
{
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config,
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options,
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lib,
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pkgs,
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...
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}:
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let
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cfg = config.programs.diff-highlight;
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inherit (lib)
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mkEnableOption
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mkIf
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mkOption
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types
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;
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in
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{
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meta.maintainers = with lib.maintainers; [ khaneliman ];
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imports = [
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(lib.mkRenamedOptionModule
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[ "programs" "git" "diff-highlight" "enable" ]
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[ "programs" "diff-highlight" "enable" ]
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)
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(lib.mkRenamedOptionModule
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[ "programs" "git" "diff-highlight" "pagerOpts" ]
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[ "programs" "diff-highlight" "pagerOpts" ]
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)
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];
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options.programs.diff-highlight = {
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enable = mkEnableOption "" // {
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description = ''
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Enable the contrib {command}`diff-highlight` syntax highlighter.
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See <https://github.com/git/git/blob/master/contrib/diff-highlight/README>,
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'';
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};
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pagerOpts = mkOption {
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type = types.listOf types.str;
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default = [ ];
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example = [
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"--tabs=4"
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"-RFX"
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];
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description = ''
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Arguments to be passed to {command}`less`.
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'';
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};
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enableGitIntegration = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether to enable git integration for diff-highlight.
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When enabled, diff-highlight will be configured as git's pager and diff filter.
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'';
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};
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};
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config =
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let
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oldOption = lib.attrByPath [ "programs" "git" "diff-highlight" "enable" ] null options;
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oldOptionEnabled =
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oldOption != null && oldOption.isDefined && (builtins.length oldOption.files) > 0;
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in
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lib.mkMerge [
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(mkIf cfg.enable {
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assertions = [
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{
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assertion = !cfg.enableGitIntegration || config.programs.git.package != null;
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message = ''
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programs.diff-highlight.enableGitIntegration requires programs.git.package to be set.
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Please set programs.git.package to a valid git package.
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'';
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}
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];
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warnings =
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lib.optional
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(
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cfg.enableGitIntegration && options.programs.diff-highlight.enableGitIntegration.highestPrio == 1490
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)
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"`programs.diff-highlight.enableGitIntegration` automatic enablement is deprecated. Please explicitly set `programs.diff-highlight.enableGitIntegration = true`.";
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# Auto-enable git integration if programs.git.diff-highlight.enable was set to true
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programs.diff-highlight.enableGitIntegration = lib.mkIf oldOptionEnabled (lib.mkOverride 1490 true);
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})
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(mkIf (cfg.enable && cfg.enableGitIntegration && config.programs.git.package != null) {
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programs.git = {
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enable = lib.mkDefault true;
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iniContent =
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let
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gitPackage = config.programs.git.package;
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dhCommand = "${gitPackage}/share/git/contrib/diff-highlight/diff-highlight";
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in
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{
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core.pager = "${dhCommand} | ${lib.getExe pkgs.less} ${lib.escapeShellArgs cfg.pagerOpts}";
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interactive.diffFilter = dhCommand;
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};
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};
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})
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];
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}
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