add libs to flake

3 files changed, 47 insertions, 1 deletions

diff --git a/flake.nix b/flake.nix
index b5e70c1..0088f41 100644
--- a/flake.nix
+++ b/flake.nix
@@ -31,6 +31,7 @@
   };
 
   outputs = {
+    self,
     nixpkgs,
     flake-utils,
     ...
@@ -58,9 +59,17 @@
       kaworu = nixosConfigurations.kaworu.config.home-manager.users.${options.user}.home;
     };
 
+    lib = import ./lib {
+      inherit inputs options;
+      inherit (nixpkgs) lib;
+    };
+
     packages = perSystem (
       pkgs: system:
-        import ./pkgs {inherit pkgs inputs system options;}
+        import ./pkgs {
+          inherit pkgs inputs system options;
+          inherit (nixpkgs) lib;
+        }
     );
 
     legacyPackages = packages;
diff --git a/lib/default.nix b/lib/default.nix
new file mode 100644
index 0000000..574a348
--- /dev/null
+++ b/lib/default.nix
@@ -0,0 +1,5 @@
+{...} @ inputs: let
+  callLibs = file: import file inputs;
+in {
+  lua = callLibs ./lua.nix;
+}
diff --git a/lib/lua.nix b/lib/lua.nix
new file mode 100644
index 0000000..704cdfa
--- /dev/null
+++ b/lib/lua.nix
@@ -0,0 +1,32 @@
+{lib, ...}: let
+  fmt = val:
+  # nil
+    if val == null
+    then "nil"
+    # boolean
+    else if builtins.isBool val
+    then
+      if val
+      then "true"
+      else "false"
+    # number
+    else if builtins.isInt val || builtins.isFloat val
+    then toString val
+    # string
+    else if builtins.isString val
+    then "'${val}'"
+    # table (array)
+    else if builtins.isList val
+    then "{ " + (lib.concatStringsSep ", " (map fmt val)) + " }"
+    # table (object)
+    else if builtins.isAttrs val
+    then
+      "{ "
+      + (lib.concatStringsSep ", "
+        (lib.mapAttrsToList (k: v: "${k} = ${fmt v}") val))
+      + " }"
+    # invalid
+    else throw "Unsupported value: ${toString val}";
+in {
+  fmt = fmt;
+}