devShells/masna3: pin to nixpkgs-unstable

nix/devShells/masna3.nix

@@ -1,20 +1,7 @@
 let
-  bootpkgs = import <nixpkgs> {};
-
-  pkgs = import (bootpkgs.fetchFromGitHub {
-    owner = "NixOS";
-    repo = "nixpkgs";
-    rev = "nixos-25.05";
-    hash = "sha256-eogqv6FqZXHgqrbZzHnq43GalnRbLTkbBbFtEfm1RSc=";
-  }) {};
-
-  unstable = import (bootpkgs.fetchFromGitHub {
-    owner = "NixOS";
-    repo = "nixpkgs";
-    rev = "haskell-updates";
-    hash = "sha256-dwgA4RwZhqiz4VZoCBf9Li8hWIppGEhcIRL/PIBsStU=";
-  }) {};
+  sources = import ../../npins;
 in
+  {pkgs ? import sources.pin-masna3shell {}}:
     pkgs.mkShell (let
       libs = with pkgs; [
         zlib
@@ -33,16 +20,13 @@ in
       in
         hlib.dontCheck (hlib.doJailbreak pkg);
 
-    haskellPackages = pkgs.haskellPackages;
+      haskellPackages = pkgs.haskell.packages.ghc910;
     in {
       name = "masna3";
       packages =
         [
-        # used pinned ghc
-        unstable.haskell.packages.ghc9102.ghc
-
-        # Broken :(
-        # unstableHaskellPackages.haskell-language-server
+          pkgs.haskell.packages.ghc9102.ghc
+          pkgs.haskell.packages.ghc9102.haskell-language-server
 
           haskellPackages.cabal-install
           haskellPackages.postgresql-migration
@@ -56,7 +40,7 @@ in
             version = "3.10";
             haskellPackages = pkgs.haskell.packages.ghc912;
           })
-        haskellPackages.apply-refact
+          pkgs.haskell.packages.ghc98.apply-refact
           haskellPackages.ghc-tags
           haskellPackages.cabal-gild
 

npins/sources.json

@@ -270,11 +270,11 @@
         "owner": "NixOS",
         "repo": "nixpkgs"
       },
-      "branch": "nixos-25.05",
+      "branch": "nixpkgs-unstable",
       "submodules": false,
-      "revision": "fc756aa6f5d3e2e5666efcf865d190701fef150a",
-      "url": "https://github.com/NixOS/nixpkgs/archive/fc756aa6f5d3e2e5666efcf865d190701fef150a.tar.gz",
-      "hash": "09s5npwi2vdi0ldkjbavfjb9lwg3x9wwrndnmbh72rbal6zjm23s",
+      "revision": "641d909c4a7538f1539da9240dedb1755c907e40",
+      "url": "https://github.com/NixOS/nixpkgs/archive/641d909c4a7538f1539da9240dedb1755c907e40.tar.gz",
+      "hash": "10hpb1aw884k3zzcy1mhf47dqvfagiyx7kr6hg0p5xcwg04mkx8x",
       "frozen": true
     },
     "pin-necro-man-nixpkgs": {