567 lines
17 KiB
Nix
567 lines
17 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.programs.git;
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# create [section "subsection"] keys from "section.subsection" attrset names
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mkSectionName = name:
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let
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containsQuote = strings.hasInfix ''"'' name;
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sections = splitString "." name;
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section = head sections;
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subsections = tail sections;
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subsection = concatStringsSep "." subsections;
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in if containsQuote || subsections == [ ] then
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name
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else
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''${section} "${subsection}"'';
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mkValueString = v:
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let
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escapedV = ''
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"${
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replaceStrings [ "\n" " " ''"'' "\\" ] [ "\\n" "\\t" ''\"'' "\\\\" ] v
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}"'';
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in generators.mkValueStringDefault { } (if isString v then escapedV else v);
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# generation for multiple ini values
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mkKeyValue = k: v:
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let
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mkKeyValue =
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generators.mkKeyValueDefault { inherit mkValueString; } " = " k;
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in concatStringsSep "\n" (map (kv: " " + mkKeyValue kv) (toList v));
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# converts { a.b.c = 5; } to { "a.b".c = 5; } for toINI
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gitFlattenAttrs = let
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recurse = path: value:
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if isAttrs value then
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mapAttrsToList (name: value: recurse ([ name ] ++ path) value) value
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else if length path > 1 then {
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${concatStringsSep "." (reverseList (tail path))}.${head path} = value;
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} else {
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${head path} = value;
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};
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in attrs: foldl recursiveUpdate { } (flatten (recurse [ ] attrs));
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gitToIni = attrs:
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let toIni = generators.toINI { inherit mkKeyValue mkSectionName; };
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in toIni (gitFlattenAttrs attrs);
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gitIniType = with types;
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let
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primitiveType = either str (either bool int);
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multipleType = either primitiveType (listOf primitiveType);
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sectionType = attrsOf multipleType;
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supersectionType = attrsOf (either multipleType sectionType);
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in attrsOf supersectionType;
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signModule = types.submodule {
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options = {
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key = mkOption {
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type = types.nullOr types.str;
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description = ''
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The default GPG signing key fingerprint.
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</para><para>
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Set to <literal>null</literal> to let GnuPG decide what signing key
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to use depending on commit’s author.
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'';
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};
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signByDefault = mkOption {
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type = types.bool;
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default = false;
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description = "Whether commits and tags should be signed by default.";
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};
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gpgPath = mkOption {
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type = types.str;
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default = "${pkgs.gnupg}/bin/gpg2";
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defaultText = "\${pkgs.gnupg}/bin/gpg2";
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description = "Path to GnuPG binary to use.";
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};
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};
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};
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includeModule = types.submodule ({ config, ... }: {
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options = {
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condition = mkOption {
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type = types.nullOr types.str;
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default = null;
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description = ''
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Include this configuration only when <varname>condition</varname>
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matches. Allowed conditions are described in
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<citerefentry>
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<refentrytitle>git-config</refentrytitle>
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<manvolnum>1</manvolnum>
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</citerefentry>.
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'';
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};
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path = mkOption {
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type = with types; either str path;
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description = "Path of the configuration file to include.";
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};
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contents = mkOption {
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type = types.attrsOf types.anything;
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default = { };
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example = literalExpression ''
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{
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user = {
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email = "bob@work.example.com";
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name = "Bob Work";
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signingKey = "1A2B3C4D5E6F7G8H";
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};
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commit = {
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gpgSign = true;
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};
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};
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'';
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description = ''
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Configuration to include. If empty then a path must be given.
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This follows the configuration structure as described in
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<citerefentry>
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<refentrytitle>git-config</refentrytitle>
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<manvolnum>1</manvolnum>
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</citerefentry>.
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'';
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};
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contentSuffix = mkOption {
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type = types.str;
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default = "gitconfig";
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description = ''
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Nix store name for the git configuration text file,
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when generating the configuration text from nix options.
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'';
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};
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};
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config.path = mkIf (config.contents != { }) (mkDefault
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(pkgs.writeText (hm.strings.storeFileName config.contentSuffix)
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(gitToIni config.contents)));
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});
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in {
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meta.maintainers = [ maintainers.rycee ];
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options = {
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programs.git = {
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enable = mkEnableOption "Git";
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package = mkOption {
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type = types.package;
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default = pkgs.git;
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defaultText = literalExpression "pkgs.git";
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description = ''
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Git package to install. Use <varname>pkgs.gitAndTools.gitFull</varname>
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to gain access to <command>git send-email</command> for instance.
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'';
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};
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userName = mkOption {
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type = types.nullOr types.str;
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default = null;
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description = "Default user name to use.";
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};
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userEmail = mkOption {
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type = types.nullOr types.str;
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default = null;
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description = "Default user email to use.";
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};
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aliases = mkOption {
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type = types.attrsOf types.str;
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default = { };
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example = { co = "checkout"; };
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description = "Git aliases to define.";
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};
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signing = mkOption {
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type = types.nullOr signModule;
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default = null;
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description = "Options related to signing commits using GnuPG.";
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};
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extraConfig = mkOption {
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type = types.either types.lines gitIniType;
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default = { };
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example = {
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core = { whitespace = "trailing-space,space-before-tab"; };
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url."ssh://git@host".insteadOf = "otherhost";
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};
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description = ''
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Additional configuration to add. The use of string values is
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deprecated and will be removed in the future.
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'';
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};
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hooks = mkOption {
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type = types.attrsOf types.path;
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default = { };
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example = literalExpression ''
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{
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pre-commit = ./pre-commit-script;
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}
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'';
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description = ''
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Configuration helper for Git hooks.
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See <link xlink:href="https://git-scm.com/docs/githooks" />
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for reference.
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'';
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};
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iniContent = mkOption {
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type = gitIniType;
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internal = true;
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};
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ignores = mkOption {
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type = types.listOf types.str;
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default = [ ];
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example = [ "*~" "*.swp" ];
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description = "List of paths that should be globally ignored.";
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};
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attributes = mkOption {
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type = types.listOf types.str;
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default = [ ];
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example = [ "*.pdf diff=pdf" ];
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description = "List of defining attributes set globally.";
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};
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includes = mkOption {
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type = types.listOf includeModule;
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default = [ ];
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example = literalExpression ''
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[
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{ path = "~/path/to/config.inc"; }
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{
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path = "~/path/to/conditional.inc";
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condition = "gitdir:~/src/dir";
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}
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]
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'';
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description = "List of configuration files to include.";
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};
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lfs = {
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enable = mkEnableOption "Git Large File Storage";
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skipSmudge = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Skip automatic downloading of objects on clone or pull.
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This requires a manual <command>git lfs pull</command>
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every time a new commit is checked out on your repository.
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'';
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};
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};
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difftastic = {
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enable = mkEnableOption "" // {
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description = ''
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Enable the <command>difftastic</command> syntax highlighter.
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See <link xlink:href="https://github.com/Wilfred/difftastic" />.
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'';
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};
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background = mkOption {
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type = types.enum [ "light" "dark" ];
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default = "light";
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example = "dark";
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description = ''
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Determines whether difftastic should use the lighter or darker colors
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for syntax highlighting.
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'';
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};
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color = mkOption {
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type = types.enum [ "always" "auto" "never" ];
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default = "auto";
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example = "always";
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description = ''
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Determines when difftastic should color its output.
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'';
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};
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display = mkOption {
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type =
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types.enum [ "side-by-side" "side-by-side-show-both" "inline" ];
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default = "side-by-side";
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example = "inline";
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description = ''
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Determines how the output displays - in one column or two columns.
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'';
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};
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};
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delta = {
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enable = mkEnableOption "" // {
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description = ''
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Whether to enable the <command>delta</command> syntax highlighter.
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See <link xlink:href="https://github.com/dandavison/delta" />.
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'';
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};
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options = mkOption {
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type = with types;
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let
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primitiveType = either str (either bool int);
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sectionType = attrsOf primitiveType;
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in attrsOf (either primitiveType sectionType);
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default = { };
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example = {
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features = "decorations";
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whitespace-error-style = "22 reverse";
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decorations = {
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commit-decoration-style = "bold yellow box ul";
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file-style = "bold yellow ul";
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file-decoration-style = "none";
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};
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};
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description = ''
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Options to configure delta.
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'';
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};
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};
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diff-so-fancy = {
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enable = mkEnableOption "" // {
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description = ''
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Enable the <command>diff-so-fancy</command> diff colorizer.
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See <link xlink:href="https://github.com/so-fancy/diff-so-fancy" />.
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'';
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};
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markEmptyLines = mkOption {
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type = types.bool;
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default = true;
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example = false;
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description = ''
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Whether the first block of an empty line should be colored.
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'';
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};
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changeHunkIndicators = mkOption {
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type = types.bool;
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default = true;
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example = false;
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description = ''
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Simplify git header chunks to a more human readable format.
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'';
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};
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stripLeadingSymbols = mkOption {
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type = types.bool;
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default = true;
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example = false;
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description = ''
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Whether the <literal>+</literal> or <literal>-</literal> at
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line-start should be removed.
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'';
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};
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useUnicodeRuler = mkOption {
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type = types.bool;
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default = true;
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example = false;
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description = ''
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By default, the separator for the file header uses Unicode
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line-drawing characters. If this is causing output errors on
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your terminal, set this to false to use ASCII characters instead.
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'';
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};
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rulerWidth = mkOption {
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type = types.nullOr types.int;
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default = null;
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example = false;
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description = ''
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By default, the separator for the file header spans the full
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width of the terminal. Use this setting to set the width of
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the file header manually.
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'';
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};
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};
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};
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};
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config = mkIf cfg.enable (mkMerge [
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{
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home.packages = [ cfg.package ];
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assertions = [{
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assertion = let
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enabled =
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[ cfg.delta.enable cfg.diff-so-fancy.enable cfg.difftastic.enable ];
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in count id enabled <= 1;
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message =
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"Only one of 'programs.git.delta.enable' or 'programs.git.difftastic.enable' or 'programs.git.diff-so-fancy.enable' can be set to true at the same time.";
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}];
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programs.git.iniContent.user = {
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name = mkIf (cfg.userName != null) cfg.userName;
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email = mkIf (cfg.userEmail != null) cfg.userEmail;
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};
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xdg.configFile = {
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"git/config".text = gitToIni cfg.iniContent;
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"git/ignore" = mkIf (cfg.ignores != [ ]) {
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text = concatStringsSep "\n" cfg.ignores + "\n";
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};
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"git/attributes" = mkIf (cfg.attributes != [ ]) {
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text = concatStringsSep "\n" cfg.attributes + "\n";
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};
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};
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}
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{
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programs.git.iniContent = let
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hasSmtp = name: account: account.smtp != null;
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genIdentity = name: account:
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with account;
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nameValuePair "sendemail.${name}" (if account.msmtp.enable then {
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smtpServer = "${pkgs.msmtp}/bin/msmtp";
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envelopeSender = "auto";
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from = address;
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} else
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{
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smtpEncryption = if smtp.tls.enable then
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(if smtp.tls.useStartTls
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|| versionOlder config.home.stateVersion "20.09" then
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"tls"
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else
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"ssl")
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else
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"";
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smtpSslCertPath =
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mkIf smtp.tls.enable (toString smtp.tls.certificatesFile);
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smtpServer = smtp.host;
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smtpUser = userName;
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from = address;
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} // optionalAttrs (smtp.port != null) {
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smtpServerPort = smtp.port;
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});
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in mapAttrs' genIdentity
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(filterAttrs hasSmtp config.accounts.email.accounts);
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}
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(mkIf (cfg.signing != null) {
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programs.git.iniContent = {
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user.signingKey = mkIf (cfg.signing.key != null) cfg.signing.key;
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commit.gpgSign = cfg.signing.signByDefault;
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tag.gpgSign = cfg.signing.signByDefault;
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gpg.program = cfg.signing.gpgPath;
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};
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})
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(mkIf (cfg.hooks != { }) {
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programs.git.iniContent = {
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core.hooksPath = let
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entries =
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mapAttrsToList (name: path: { inherit name path; }) cfg.hooks;
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in toString (pkgs.linkFarm "git-hooks" entries);
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};
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})
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(mkIf (cfg.aliases != { }) { programs.git.iniContent.alias = cfg.aliases; })
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(mkIf (lib.isAttrs cfg.extraConfig) {
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programs.git.iniContent = cfg.extraConfig;
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})
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(mkIf (lib.isString cfg.extraConfig) {
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warnings = [''
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Using programs.git.extraConfig as a string option is
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deprecated and will be removed in the future. Please
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change to using it as an attribute set instead.
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''];
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xdg.configFile."git/config".text = cfg.extraConfig;
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})
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(mkIf (cfg.includes != [ ]) {
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xdg.configFile."git/config".text = let
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include = i:
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with i;
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if condition != null then {
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includeIf.${condition}.path = "${path}";
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} else {
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include.path = "${path}";
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};
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in mkAfter
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(concatStringsSep "\n" (map gitToIni (map include cfg.includes)));
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})
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(mkIf cfg.lfs.enable {
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home.packages = [ pkgs.git-lfs ];
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programs.git.iniContent.filter.lfs =
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let skipArg = optional cfg.lfs.skipSmudge "--skip";
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in {
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clean = "git-lfs clean -- %f";
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process =
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concatStringsSep " " ([ "git-lfs" "filter-process" ] ++ skipArg);
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required = true;
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smudge = concatStringsSep " "
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([ "git-lfs" "smudge" ] ++ skipArg ++ [ "--" "%f" ]);
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};
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})
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(mkIf cfg.difftastic.enable {
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home.packages = [ pkgs.difftastic ];
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programs.git.iniContent = let
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difftCommand = concatStringsSep " " [
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"${pkgs.difftastic}/bin/difft"
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"--color ${cfg.difftastic.color}"
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"--background ${cfg.difftastic.background}"
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"--display ${cfg.difftastic.display}"
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];
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in {
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diff.external = difftCommand;
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core.pager = "${pkgs.less}/bin/less -XF";
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};
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})
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(mkIf cfg.delta.enable {
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home.packages = [ pkgs.delta ];
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programs.git.iniContent = let deltaCommand = "${pkgs.delta}/bin/delta";
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in {
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core.pager = deltaCommand;
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interactive.diffFilter = "${deltaCommand} --color-only";
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delta = cfg.delta.options;
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};
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})
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(mkIf cfg.diff-so-fancy.enable {
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home.packages = [ pkgs.diff-so-fancy ];
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programs.git.iniContent =
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let dsfCommand = "${pkgs.diff-so-fancy}/bin/diff-so-fancy";
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in {
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core.pager = "${dsfCommand} | ${pkgs.less}/bin/less --tabs=4 -RFX";
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interactive.diffFilter = "${dsfCommand} --patch";
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diff-so-fancy = {
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markEmptyLines = cfg.diff-so-fancy.markEmptyLines;
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changeHunkIndicators = cfg.diff-so-fancy.changeHunkIndicators;
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stripLeadingSymbols = cfg.diff-so-fancy.stripLeadingSymbols;
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useUnicodeRuler = cfg.diff-so-fancy.useUnicodeRuler;
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||
rulerWidth = mkIf (cfg.diff-so-fancy.rulerWidth != null)
|
||
(cfg.diff-so-fancy.rulerWidth);
|
||
};
|
||
};
|
||
})
|
||
]);
|
||
}
|