Initial import

modules/programs/git.nix

@@ -0,0 +1,102 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+
+  cfg = config.programs.git;
+
+  toINI = (import ../lib/generators.nix).toINI {};
+
+  signModule = types.submodule (
+    { ... }: {
+      options = {
+        key = mkOption {
+          type = types.str;
+          default = null;
+          description = "The default GPG signing key fingerprint.";
+        };
+
+        signByDefault = mkOption {
+          type = types.bool;
+          default = false;
+          description = "Whether commits should be signed by default.";
+        };
+
+        gpgPath = mkOption {
+          type = types.str;
+          default = "${pkgs.gnupg}/bin/gpg2";
+          defaultText = "''${pkgs.gnupg}/bin/gpg2";
+          description = "Path to GnuPG binary to use.";
+        };
+      };
+    }
+  );
+
+in
+
+{
+  options = {
+    programs.git = {
+      enable = mkEnableOption "Git";
+
+      package = mkOption {
+        type = types.package;
+        default = pkgs.git;
+        defaultText = "pkgs.git";
+        description = "Git package to install.";
+      };
+
+      userName = mkOption {
+        type = types.str;
+        description = "Default user name to use.";
+      };
+
+      userEmail = mkOption {
+        type = types.str;
+        description = "Default user email to use.";
+      };
+
+      aliases = mkOption {
+        type = types.attrs;
+        default = {};
+        description = "Git aliases to define.";
+      };
+
+      signing = mkOption {
+        type = types.nullOr signModule;
+        default = null;
+        description = "Options related to signing commits using GnuPG.";
+      };
+
+      extraConfig = mkOption {
+        type = types.lines;
+        default = null;
+        description = "Additional configuration to add.";
+      };
+    };
+  };
+
+  config = mkIf cfg.enable (
+    let
+      ini = {
+        user = {
+          name = cfg.userName;
+          email = cfg.userEmail;
+        } // optionalAttrs (cfg.signing != null) {
+          signingKey = cfg.signing.key;
+        };
+      } // optionalAttrs (cfg.signing != null) {
+        commit.gpgSign = cfg.signing.signByDefault;
+        gpg.program = cfg.signing.gpgPath;
+      } // optionalAttrs (cfg.aliases != {}) {
+        alias = cfg.aliases;
+      };
+    in
+      {
+        home.packages = [ cfg.package ];
+
+        home.file.".gitconfig".text = toINI ini + "\n" + cfg.extraConfig;
+      }
+  );
+}