WIP refactor

common/programs/docker.nix

@@ -0,0 +1,38 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+let
+  ccfg = import ../config.nix;
+  cfg_path = [
+    ccfg.custom_config_key
+    "programs"
+    "docker"
+  ];
+  cfg = lib.attrsets.getAttrFromPath cfg_path config;
+
+  users_cfg = config.${ccfg.custom_config_key}.users;
+in
+{
+  options =
+    { }
+    // lib.attrsets.setAttrByPath cfg_path {
+      enable = lib.mkEnableOption "docker";
+    };
+
+  config = lib.mkIf cfg.enable {
+    virtualisation.docker = {
+      enable = true;
+      autoPrune.enable = true;
+    };
+    # TODO add admins?
+    users.extraGroups.docker.members = lib.mkIf (users_cfg.primary != null) [ users_cfg.primary ];
+    environment.shellAliases = {
+      dockerv = "docker volume";
+      dockeri = "docker image";
+      dockerc = "docker container";
+    };
+  };
+}