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{ config, lib, pkgs, ... }:
let
inherit (lib) types;
cfg = config.vuizvui.user.aszlig.programs.git;
gitPatched = pkgs.gitFull.overrideAttrs (git: {
makeFlags = let
oldFlags = git.makeFlags or [];
newVal = "ETC_GITCONFIG=${cfg.configFile}";
in if lib.isList oldFlags
then oldFlags ++ [ newVal ]
else "${oldFlags} ${newVal}";
});
libgit2Patched = pkgs.libgit2.overrideAttrs (drv: {
postPatch = (drv.postPatch or "") + ''
substituteInPlace src/libgit2/sysdir.c \
--replace '"/etc"' ${lib.escapeShellArg "\"${cfg.configFile}\""}
'';
});
deltaPatched = pkgs.delta.overrideAttrs (drv: {
buildInputs = (drv.buildInputs or []) ++ lib.singleton libgit2Patched;
});
in {
options.vuizvui.user.aszlig.programs.git = {
enable = lib.mkEnableOption "Git";
configFile = lib.mkOption {
type = types.path;
readOnly = true;
description = ''
The path to the system-wide configuration file.
'';
};
delta.enable = lib.mkEnableOption "using delta for Git diff";
settings = lib.mkOption {
type = let
scalar = types.oneOf [ types.bool types.int types.str ];
section = types.either (types.attrsOf scalar) scalar;
in types.attrsOf (types.attrsOf section);
default = {};
example = {
color.ui = "auto";
merge.tool = "vimdiff";
guitool.foobar.noconsole = true;
};
description = ''
System-wide Git options as described in <citerefentry>
<refentrytitle>git-config</refentrytitle>
<manvolnum>1</manvolnum>
</citerefentry>.
'';
};
};
config = lib.mkIf cfg.enable {
vuizvui.user.aszlig.programs.git.configFile = let
escStr = s: "\"${lib.escape [ "\"" "\\" ] s}\"";
mkVal = v: if lib.isBool v && v then "true"
else if lib.isBool v && !v then "false"
else escStr (toString v);
mkLine = key: val: "${key} = ${mkVal val}";
joinLines = lib.concatStringsSep "\n";
filterNull = lib.filterAttrs (lib.const (v: !(isNull v)));
mkSection = sect: subsect: vals: ''
[${sect}${lib.optionalString (subsect != null) " ${escStr subsect}"}]
${joinLines (lib.mapAttrsToList mkLine (filterNull vals))}
'';
mkConf = sect: content: let
subs = lib.filterAttrs (lib.const lib.isAttrs) content;
nonSubs = lib.filterAttrs (lib.const (s: !lib.isAttrs s)) content;
maybePlain = lib.optional (nonSubs != {});
plainSects = lib.singleton (mkSection sect null nonSubs);
in lib.mapAttrsToList (mkSection sect) subs ++ maybePlain plainSects;
lines = lib.flatten (lib.mapAttrsToList mkConf cfg.settings);
in pkgs.writeText "gitconfig" (joinLines lines);
vuizvui.user.aszlig.programs.git.settings = lib.mkIf cfg.delta.enable {
interactive.diffFilter = "delta --color-only";
pager = lib.flip lib.genAttrs (lib.const "delta") [
"diff" "log" "reflog" "show"
];
};
environment.systemPackages = [
gitPatched
pkgs.gitAndTools.git-remote-hg
pkgs.gitAndTools.hub
] ++ lib.optional cfg.delta.enable deltaPatched;
};
}
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