environment.aliases: add module

nixos/modules/misc/aliases.nix

@@ -0,0 +1,44 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.environment.aliases;
+
+  createScript = key: value:
+  let
+    normalizedKey = key; # TODO: normalize
+    script = ''#!${pkgs.bash}/bin/bash
+
+set -euo pipefail
+
+exec ${value}
+'';
+  in
+    ''
+      echo ${escapeShellArg script} > $out/bin/${escapeShellArg normalizedKey}
+      chmod +x $out/bin/${escapeShellArg normalizedKey}
+    '';
+in
+{
+  options.environment.aliases = mkOption {
+    type = types.attrsOf types.str;
+    description = "Global binary aliases to create";
+    default = {};
+  };
+
+  config = mkIf (cfg != {}) {
+    environment.systemPackages = [
+      (with pkgs; stdenv.mkDerivation {
+        name = "aliases";
+
+        dontUnpack = true;
+
+        installPhase = ''
+          mkdir -p $out/bin
+          ${builtins.concatStringsSep "\n" (forEach (builtins.attrNames cfg) (key: createScript key cfg.${key}))}
+        '';
+      })
+    ];
+  };
+}

nixos/modules/module-list.nix

@@ -127,6 +127,7 @@
   ./i18n/input-method/uim.nix
   ./image/images.nix
   ./installer/tools/tools.nix
+  ./misc/aliases.nix
   ./misc/assertions.nix
   ./misc/crashdump.nix
   ./misc/documentation.nix