chore(lib): Clean instanciation

hive.nix

@@ -11,17 +11,9 @@ let
 
   sources = import ./sources.nix;
 
-  inherit (sources) bootstrapNixpkgs;
+  lib = sources.fullLib;
 
-  lib = bootstrapNixpkgs.lib.extend (_: _: {
+  inherit (lib.extra) mapSingleFuse;
-    extra = import ./lib/nix-lib; 
-  });
-
-  nix-lib = lib.extra; # TODO: Assess perf penalty of fixed point
-  # TODO same but using bootstrapnixpkgs for nix-lib instanciation
-  # original statement: import ./lib/nix-lib;
-
-  inherit (nix-lib) mapSingleFuse;
 
   ### Let's build meta
   meta = (import ./meta) lib;
@@ -46,7 +38,6 @@ let
       };
     };
 
-
   # Build up the arguments to instantiate a nixpkgs given a system and a version.
   mkNixpkgsConfig =
     system:
@@ -58,13 +49,12 @@ let
     .${system} or (throw "Unknown system: ${system} for nixpkgs configuration instantiation");
 
   # Instanciates the required nixpkgs version
-  mkSystemNixpkgs = system: version:
+  mkSystemNixpkgs =
-    import sources."nixos-${version}" (mkNixpkgsConfig system version);
+    system: version: import sources."nixos-${version}" (mkNixpkgsConfig system version);
 
   # All supported nixpkgs versions × systems, instanciated
   nixpkgs = mapSingleFuse (s: mapSingleFuse (mkSystemNixpkgs s) nixpkgs'.versions) nixpkgs'.systems;
 
-
   # Get the configured nixos version for the node,
   # defaulting to the one defined in meta/nixpkgs
   version = node: meta.nodes.${node}.nixpkgs.version;
@@ -77,9 +67,7 @@ let
   # Function to create arguments based on the node
   #
   mkArgs = node: rec {
-    lib = sourcePkgs.lib // {
+    lib = sourcePkgs.lib.extend sources.libOverlay;
-      extra = nix-lib;
-    };
 
     sourcePkgs = nodePkgs node;
     inherit meta;

keys.nix

@@ -3,11 +3,11 @@
 # SPDX-License-Identifier: EUPL-1.2
 
 let
-  _sources = import ../npins;
+  sources = import ./sources.nix;
 
-  inherit (import _sources.nixpkgs { }) lib;
+  lib = sources.fullLib;
 
   meta = (import ../meta lib).config;
 
 in
-  import ./lib/keys { inherit meta lib; }
+import ./lib/keys { inherit meta lib; }

lib/keys/default.nix

@@ -6,7 +6,7 @@
 
 { meta, lib }:
 let
-  inherit (import ../nix-lib) setDefault unique;
+  inherit (lib.extra) setDefault unique;
 
   getAttr = lib.flip builtins.getAttr;
 in

lib/nix-lib/default.nix

@@ -2,17 +2,13 @@
 # SPDX-FileCopyrightText: 2024 Tom Hubrecht <tom.hubrecht@dgnum.eu>
 #
 # SPDX-License-Identifier: EUPL-1.2
-
+{ lib }:
-let
-  # Reimplement optional functions
-  _optional =
-    default: b: value:
-    if b then value else default;
-in
 
 rec {
-  inherit (import ./nixpkgs.nix)
+  inherit (lib)
     flip
+    optionals
+    optionalString
     hasPrefix
     recursiveUpdate
     splitString
@@ -112,11 +108,8 @@ rec {
 
   subAttrs = attrs: builtins.map (subAttr attrs);
 
-  optionalList = _optional [ ];
+  optionalList = optionals;
 
-  optionalAttrs = _optional { };
-
-  optionalString = _optional "";
   /*
     Same as fuseAttrs but using `lib.recursiveUpdate` to merge attribute
     sets together.

meta/verify.nix

@@ -32,9 +32,7 @@ in
       import ./dns.nix {
         inherit dns;
 
-        lib = pkgs.lib // {
+        lib = sources.fullLib;
-          extra = import ../lib/nix-lib;
-        };
       }
     )
   );

sources.nix

@@ -5,9 +5,9 @@
 # SPDX-License-Identifier: EUPL-1.2
 
 let
-  sources' = import ./npins;
+  unpatchedSources = import ./npins;
 
-  bootstrapNixpkgs = import sources'.nixos-unstable { };
+  bootstrapNixpkgs = import unpatchedSources.nixos-unstable { };
 
   patch = (import ./lib/nix-patches { patchFile = ./patches; }).base {
     pkgs = bootstrapNixpkgs;
@@ -19,5 +19,20 @@ let
       inherit src;
       name = k;
     }
-  ) sources';
+  ) unpatchedSources;
-in sources // { bootstrapNixpkgs = bootstrapNixpkgs; unpatchedSources = sources; }
+
+  libOverlay = final: _: {
+    extra = import ./lib/nix-lib { lib = final; };
+  };
+in
+sources
+// {
+
+  inherit
+    bootstrapNixpkgs
+    libOverlay
+    unpatchedSources
+    ;
+
+  fullLib = bootstrapNixpkgs.lib.extend libOverlay;
+}