Update nixPaths (#10)

.github/workflows/build.yml

@@ -34,9 +34,9 @@ jobs:
         cachixName:
           - nginx
         nixPath:
-          - nixpkgs=channel:nixos-unstable
-          - nixpkgs=channel:nixpkgs-unstable
-          - nixpkgs=channel:nixos-23.05
+          - nixpkgs=https://github.com/NixOS/nixpkgs/archive/refs/heads/nixpkgs-unstable.tar.gz
+          - nixpkgs=https://github.com/NixOS/nixpkgs/archive/refs/heads/nixos-unstable.tar.gz
+          - nixpkgs=https://github.com/NixOS/nixpkgs/archive/refs/heads/nixos-24.05.tar.gz
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository

ci.nix

@@ -15,7 +15,10 @@ with builtins;
 let
   isReserved = n: n == "lib" || n == "overlays" || n == "modules";
   isDerivation = p: isAttrs p && p ? type && p.type == "derivation";
-  isBuildable = p: !(p.meta.broken or false) && p.meta.license.free or true;
+  isBuildable = p: let
+    licenseFromMeta = p.meta.license or [];
+    licenseList = if builtins.isList licenseFromMeta then licenseFromMeta else [licenseFromMeta];
+  in !(p.meta.broken or false) && builtins.all (license: license.free or true) licenseList;
   isCacheable = p: !(p.preferLocalBuild or false);
   shouldRecurseForDerivations = p: isAttrs p && p.recurseForDerivations or false;
 

default.nix

@@ -9,7 +9,7 @@
 { pkgs ? import <nixpkgs> { } }:
 
 {
-  # The `lib`, `modules`, and `overlay` names are special
+  # The `lib`, `modules`, and `overlays` names are special
   lib = import ./lib { inherit pkgs; }; # functions
   modules = import ./modules; # NixOS modules
   overlays = import ./overlays; # nixpkgs overlays