chore(npins): upgrade & update

packetmix/npins/default.nix

···
 */
 # Generated by npins. Do not modify; will be overwritten regularly
 let
-  data = builtins.fromJSON (builtins.readFile ./sources.json);
-  version = data.version;
+  # Backwards-compatibly make something that previously didn't take any arguments take some
+  # The function must return an attrset, and will unfortunately be eagerly evaluated
+  # Same thing, but it catches eval errors on the default argument so that one may still call it with other arguments
+  mkFunctor =
+    fn:
+    let
+      e = builtins.tryEval (fn { });
+    in
+    (if e.success then e.value else { error = fn { }; }) // { __functor = _self: fn; };
 
   # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/lists.nix#L295
   range =
···
 
   # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L269
   stringAsChars = f: s: concatStrings (map f (stringToCharacters s));
-  concatMapStrings = f: list: concatStrings (map f list);
   concatStrings = builtins.concatStringsSep "";
 
   # If the environment variable NPINS_OVERRIDE_${name} is set, then use
···
 
   mkSource =
     name: spec:
+    {
+      pkgs ? null,
+    }:
     assert spec ? type;
     let
+      # Unify across builtin and pkgs fetchers.
+      # `fetchGit` requires a wrapper because of slight API differences.
+      fetchers =
+        if pkgs == null then
+          {
+            inherit (builtins) fetchTarball fetchurl;
+            # For some fucking reason, fetchGit has a different signature than the other builtin fetchers …
+            fetchGit = args: (builtins.fetchGit args).outPath;
+          }
+        else
+          {
+            fetchTarball =
+              {
+                url,
+                sha256,
+              }:
+              pkgs.fetchzip {
+                inherit url sha256;
+                extension = "tar";
+              };
+            inherit (pkgs) fetchurl;
+            fetchGit =
+              {
+                url,
+                submodules,
+                rev,
+                name,
+                narHash,
+              }:
+              pkgs.fetchgit {
+                inherit url rev name;
+                fetchSubmodules = submodules;
+                hash = narHash;
+              };
+          };
+
+      # Dispatch to the correct code path based on the type
       path =
         if spec.type == "Git" then
-          mkGitSource spec
+          mkGitSource fetchers spec
         else if spec.type == "GitRelease" then
-          mkGitSource spec
+          mkGitSource fetchers spec
         else if spec.type == "PyPi" then
-          mkPyPiSource spec
+          mkPyPiSource fetchers spec
         else if spec.type == "Channel" then
-          mkChannelSource spec
+          mkChannelSource fetchers spec
         else if spec.type == "Tarball" then
-          mkTarballSource spec
+          mkTarballSource fetchers spec
+        else if spec.type == "Container" then
+          mkContainerSource pkgs spec
         else
           builtins.throw "Unknown source type ${spec.type}";
     in
···
 
   mkGitSource =
     {
+      fetchTarball,
+      fetchGit,
+      ...
+    }:
+    {
       repository,
       revision,
       url ? null,
       submodules,
       hash,
-      branch ? null,
       ...
     }:
     assert repository ? type;
     # At the moment, either it is a plain git repository (which has an url), or it is a GitHub/GitLab repository
     # In the latter case, there we will always be an url to the tarball
     if url != null && !submodules then
-      builtins.fetchTarball {
+      fetchTarball {
         inherit url;
         sha256 = hash;
       }
···
           "${if matched == null then "source" else builtins.head matched}${appendShort}";
         name = urlToName url revision;
       in
-      builtins.fetchGit {
+      fetchGit {
         rev = revision;
         narHash = hash;
 
···
       };
 
   mkPyPiSource =
-    { url, hash, ... }:
-    builtins.fetchurl {
+    { fetchurl, ... }:
+    {
+      url,
+      hash,
+      ...
+    }:
+    fetchurl {
       inherit url;
       sha256 = hash;
     };
 
   mkChannelSource =
-    { url, hash, ... }:
-    builtins.fetchTarball {
+    { fetchTarball, ... }:
+    {
+      url,
+      hash,
+      ...
+    }:
+    fetchTarball {
       inherit url;
       sha256 = hash;
     };
 
   mkTarballSource =
+    { fetchTarball, ... }:
     {
       url,
       locked_url ? url,
       hash,
       ...
     }:
-    builtins.fetchTarball {
+    fetchTarball {
       url = locked_url;
       sha256 = hash;
     };
+
+  mkContainerSource =
+    pkgs:
+    {
+      image_name,
+      image_tag,
+      image_digest,
+      ...
+    }:
+    if pkgs == null then
+      builtins.throw "container sources require passing in a Nixpkgs value: https://github.com/andir/npins/blob/master/README.md#using-the-nixpkgs-fetchers"
+    else
+      pkgs.dockerTools.pullImage {
+        imageName = image_name;
+        imageDigest = image_digest;
+        finalImageTag = image_tag;
+      };
 in
-if version == 6 then
-  builtins.mapAttrs mkSource data.pins
-else
-  throw "Unsupported format version ${toString version} in sources.json. Try running `npins upgrade`"
+mkFunctor (
+  {
+    input ? ./sources.json,
+  }:
+  let
+    data =
+      if builtins.isPath input then
+        # while `readFile` will throw an error anyways if the path doesn't exist,
+        # we still need to check beforehand because *our* error can be caught but not the one from the builtin
+        # *piegames sighs*
+        if builtins.pathExists input then
+          builtins.fromJSON (builtins.readFile input)
+        else
+          throw "Input path ${toString input} does not exist"
+      else if builtins.isAttrs input then
+        input
+      else
+        throw "Unsupported input type ${builtins.typeOf input}, must be a path or an attrset";
+    version = data.version;
+  in
+  if version == 7 then
+    builtins.mapAttrs (name: spec: mkFunctor (mkSource name spec)) data.pins
+  else
+    throw "Unsupported format version ${toString version} in sources.json. Try running `npins upgrade`"
+)

packetmix/npins/sources.json

···
       },
       "branch": "main",
       "submodules": false,
-      "revision": "c518cf4f62659d9cf585da6f29b67f8a77d0fbc0",
-      "url": "https://github.com/bluesky-social/atproto/archive/c518cf4f62659d9cf585da6f29b67f8a77d0fbc0.tar.gz",
-      "hash": "sha256-fW9BKtG9vptNYzCh/AWf8m9QoPEGX6najSFlAekElHA="
+      "revision": "532b22822f2c57d2c7b59ea6ac74e56fc02c4131",
+      "url": "https://github.com/bluesky-social/atproto/archive/532b22822f2c57d2c7b59ea6ac74e56fc02c4131.tar.gz",
+      "hash": "sha256-hVU8dlDQDD09Oz3o30JY21sNjVCfq6Tfg8umwNiBu5Y="
     },
     "catppuccin": {
       "type": "Git",
···
       },
       "branch": "master",
       "submodules": false,
-      "revision": "8395ec4576cf54411d974675d26f64208acdcee0",
-      "url": "https://gitlab.collabora.com/api/v4/projects/collabora%2Fgtimelog/repository/archive.tar.gz?sha=8395ec4576cf54411d974675d26f64208acdcee0",
-      "hash": "sha256-M9pCF+XVf5ylxgq0BSUn5Vkg1HZ6i88LDiUDM4Y1Ghs="
+      "revision": "1be9d9f7e844831f221b67a46a55fc47a164e416",
+      "url": "https://gitlab.collabora.com/api/v4/projects/collabora%2Fgtimelog/repository/archive.tar.gz?sha=1be9d9f7e844831f221b67a46a55fc47a164e416",
+      "hash": "sha256-v5WEa7M0mmrxdU1l7nIqyrMaVy2jiJNnXHLiHnw2xIc="
     },
     "copyparty": {
       "type": "GitRelease",
···
       "version_upper_bound": null,
       "release_prefix": null,
       "submodules": false,
-      "version": "v1.19.17",
-      "revision": "e2a15a3a922514efe97afc4afa043cd7c4619ad1",
-      "url": "https://api.github.com/repos/9001/copyparty/tarball/refs/tags/v1.19.17",
-      "hash": "sha256-Rb6Lq2CW+LrIH8M4sCPA8k12GX7xNUWK4I+xeByLl+M="
+      "version": "v1.19.20",
+      "revision": "450cd86dc1e98b98ab131fc9417c83289165a507",
+      "url": "https://api.github.com/repos/9001/copyparty/tarball/refs/tags/v1.19.20",
+      "hash": "sha256-/Wm8hZvdGfYWdTOF+dgTPX8DGuSKLhGw4qC4crf1dAo="
     },
     "headscale": {
       "type": "Git",
···
       },
       "branch": "main",
       "submodules": false,
-      "revision": "8010cc574ea309728f5c7d3fd1cb08252f0111f5",
-      "url": "https://github.com/juanfont/headscale/archive/8010cc574ea309728f5c7d3fd1cb08252f0111f5.tar.gz",
-      "hash": "sha256-lQhaw7SVV+qBEZnH8u+gsEwqIByFlZQyjDJ3RbW7uzM="
+      "revision": "2024219bd10adbb5c0d29f900ed0961ace8cc15c",
+      "url": "https://github.com/juanfont/headscale/archive/2024219bd10adbb5c0d29f900ed0961ace8cc15c.tar.gz",
+      "hash": "sha256-fWpOvGq+/0Wk1bBELw0CfW1qGffzEK5Dp408fIkr43o="
     },
     "home-manager": {
       "type": "Git",
···
       },
       "branch": "master",
       "submodules": false,
-      "revision": "189c21cf879669008ccf06e78a553f17e88d8ef0",
-      "url": "https://github.com/nix-community/home-manager/archive/189c21cf879669008ccf06e78a553f17e88d8ef0.tar.gz",
-      "hash": "sha256-nZh6uvc71nVNaf/y+wesnjwsmJ6IZZUnP2EzpZe48To="
+      "revision": "0562fef070a1027325dd4ea10813d64d2c967b39",
+      "url": "https://github.com/nix-community/home-manager/archive/0562fef070a1027325dd4ea10813d64d2c967b39.tar.gz",
+      "hash": "sha256-33YUsWpPyeBZEWrKQ2a1gkRZ7i0XCC/2MYpU6BVeQSU="
     },
     "impermanence": {
       "type": "Git",
···
       "version_upper_bound": null,
       "release_prefix": null,
       "submodules": false,
-      "version": "v0.4.2",
-      "revision": "f0212638a2ec787a7841882f4477d40ae24f0a5d",
-      "url": "https://api.github.com/repos/nix-community/lanzaboote/tarball/refs/tags/v0.4.2",
-      "hash": "sha256-AEEDktApTEZ5PZXNDkry2YV2k6t0dTgLPEmAZbnigXU="
+      "version": "v0.4.3",
+      "revision": "65a4aa3d4dccf50f22c0190c7ee660de51c586f2",
+      "url": "https://api.github.com/repos/nix-community/lanzaboote/tarball/refs/tags/v0.4.3",
+      "hash": "sha256-If6vQ+KvtKs3ARBO9G3l+4wFSCYtRBrwX1z+I+B61wQ="
     },
     "lix": {
       "type": "Git",
···
       },
       "branch": "main",
       "submodules": false,
-      "revision": "2d2cd7ac03311bddb9645a7ab82c7e78edccbaa0",
-      "url": "https://git.lix.systems/lix-project/lix/archive/2d2cd7ac03311bddb9645a7ab82c7e78edccbaa0.tar.gz",
-      "hash": "sha256-jUn34QOaXqguaH+WwB2xWRHlmelvzJfFuEcQrC1cwK0="
+      "revision": "3ad1af8a9883986eb95744e088eab15c752c339c",
+      "url": "https://git.lix.systems/lix-project/lix/archive/3ad1af8a9883986eb95744e088eab15c752c339c.tar.gz",
+      "hash": "sha256-N176NqnIhym6Ki8G13heS73I4b30ZJ2QGYhP9eL0+Zs="
     },
     "lix-module": {
       "type": "Git",
···
       },
       "branch": "main",
       "submodules": false,
-      "revision": "7c31a18259b8358ac196cf803a26967c0fa1d3e4",
-      "url": "https://git.lix.systems/lix-project/nixos-module/archive/7c31a18259b8358ac196cf803a26967c0fa1d3e4.tar.gz",
-      "hash": "sha256-n5dRAIC3/78drQtFxmQRrBLd6TKfotUnX7GWu0mAcSg="
+      "revision": "c47f62187601ea2991b79a9bacdbfdf76cd29fbe",
+      "url": "https://git.lix.systems/lix-project/nixos-module/archive/c47f62187601ea2991b79a9bacdbfdf76cd29fbe.tar.gz",
+      "hash": "sha256-FvuAw56NIVJpS3Kr8Wv9PpU4eehZMcdIVkxjStuYmqc="
     },
     "lua-multipart": {
       "type": "GitRelease",
···
       "version_upper_bound": null,
       "release_prefix": null,
       "submodules": false,
-      "version": "v0.0.0-alpha.14",
-      "revision": "2e98ae315a592ad6b6de44670514c048dcc88dc7",
-      "url": "https://api.github.com/repos/nilla-nix/nilla/tarball/refs/tags/v0.0.0-alpha.14",
-      "hash": "sha256-15lwhWcMonJH6UholMMHDc+p2BoSpGA4AYGrsXQA9Do="
+      "version": "v0.0.0-alpha.15",
+      "revision": "b617bdbaa5faa9345ca077cd497372ece77bf119",
+      "url": "https://api.github.com/repos/nilla-nix/nilla/tarball/refs/tags/v0.0.0-alpha.15",
+      "hash": "sha256-eCKqHY7uUiNqmP0XqWlXxpBLABuk65MRPLH2INFEE5U="
     },
     "nilla-cli": {
       "type": "Git",
···
       },
       "branch": "main",
       "submodules": false,
-      "revision": "6c6c42eaae3d095de6d1b47396c8b74ea57cb442",
-      "url": "https://github.com/nilla-nix/cli/archive/6c6c42eaae3d095de6d1b47396c8b74ea57cb442.tar.gz",
-      "hash": "sha256-0+d6LZfofBG+4OxnZcFaNg2ycgj1zcOJQUcPL1TEaSc="
+      "revision": "aa042dbd9152c99e5a8db51bcf87306737423b9e",
+      "url": "https://github.com/nilla-nix/cli/archive/aa042dbd9152c99e5a8db51bcf87306737423b9e.tar.gz",
+      "hash": "sha256-cPdYYXhCsDllVgq+gs5Wqhb41bFtKWHlkTvjOJv7its="
     },
     "nilla-home": {
       "type": "GitRelease",
···
       },
       "branch": "main",
       "submodules": false,
-      "revision": "f851a923137c0a54719412146fd63d24b3214e60",
-      "url": "https://github.com/sodiboo/niri-flake/archive/f851a923137c0a54719412146fd63d24b3214e60.tar.gz",
-      "hash": "sha256-E2ySTu/oK7cYBdAI3tlGP9zVjF4mZgWJ1OZInBCMb00="
+      "revision": "75bacb66302bca38fa6e0c180f1e5369a8115454",
+      "url": "https://github.com/sodiboo/niri-flake/archive/75bacb66302bca38fa6e0c180f1e5369a8115454.tar.gz",
+      "hash": "sha256-AZ/xrJ5JXvpRQYyiVf8Hx4lzFBQAaH9l0utOfvAA28I="
     },
     "nix-index-database": {
       "type": "Git",
···
       },
       "branch": "main",
       "submodules": false,
-      "revision": "5024e1901239a76b7bf94a4cd27f3507e639d49e",
-      "url": "https://github.com/nix-community/nix-index-database/archive/5024e1901239a76b7bf94a4cd27f3507e639d49e.tar.gz",
-      "hash": "sha256-xmU8kAsRprJiTGBTaGrwmjBP3AMA9ltlrxHKFuy5JWc="
+      "revision": "359ff6333a7b0b60819d4c20ed05a3a1f726771f",
+      "url": "https://github.com/nix-community/nix-index-database/archive/359ff6333a7b0b60819d4c20ed05a3a1f726771f.tar.gz",
+      "hash": "sha256-Pu1v3mlFhRzZiSxVHb2/i/f5yeYyRNqr0RvEUJ4UgHo="
     },
     "nix-monitored": {
       "type": "Git",
···
     "nixos-unstable": {
       "type": "Channel",
       "name": "nixos-unstable",
-      "url": "https://releases.nixos.org/nixos/unstable/nixos-25.11pre880095.5e2a59a5b1a8/nixexprs.tar.xz",
-      "hash": "sha256-u0JUo46QSoXnjLaezAM75wRNuxVMVbm5OxHH122TeTY="
+      "url": "https://releases.nixos.org/nixos/unstable/nixos-25.11pre889928.ae814fd3904b/nixexprs.tar.xz",
+      "hash": "sha256-RCg6EE0WY/2bcLCMRE2eYRs610kHisK3vc3xo8nKeeY="
     },
     "nixpkgs": {
       "type": "Channel",
       "name": "nixos-25.05",
-      "url": "https://releases.nixos.org/nixos/25.05/nixos-25.05.811497.33c6dca0c0cb/nixexprs.tar.xz",
-      "hash": "sha256-Z7kbKnORypPkJ74r6sHA2RQH1XATHLWiGgZVrli0scY="
+      "url": "https://releases.nixos.org/nixos/25.05/nixos-25.05.812554.6faeb062ee4c/nixexprs.tar.xz",
+      "hash": "sha256-aIePlSVgncfoNZHebbu/yfdhMwkzkeCX08zye8PvQmY="
     },
     "npins": {
       "type": "Git",
···
       },
       "branch": "master",
       "submodules": false,
-      "revision": "7d1888abf8c5b82692476a9de2137a024d484771",
+      "revision": "2e5a4cde904d86825cefe5971e68f1bdfb1dd36f",
       "url": null,
-      "hash": "sha256-WD/UFUMcXMV/3tqD4h2tPaQH1KDlsJ00M+T4N/xkAGs="
+      "hash": "sha256-qDVJ2sEQL0TJbWer6ByhhQrzHE1bZI3U1mmCk0sPZqo="
     },
     "treefmt-nix": {
       "type": "Git",
···
       },
       "branch": "main",
       "submodules": false,
-      "revision": "f56b1934f5f8fcab8deb5d38d42fd692632b47c2",
-      "url": "https://github.com/numtide/treefmt-nix/archive/f56b1934f5f8fcab8deb5d38d42fd692632b47c2.tar.gz",
-      "hash": "sha256-ZRVs8UqikBa4Ki3X4KCnMBtBW0ux1DaT35tgsnB1jM4="
+      "revision": "97a30861b13c3731a84e09405414398fbf3e109f",
+      "url": "https://github.com/numtide/treefmt-nix/archive/97a30861b13c3731a84e09405414398fbf3e109f.tar.gz",
+      "hash": "sha256-aF5fvoZeoXNPxT0bejFUBXeUjXfHLSL7g+mjR/p5TEg="
     },
     "walker": {
       "type": "GitRelease",
···
       "version_upper_bound": null,
       "release_prefix": null,
       "submodules": false,
-      "version": "v2.5.5",
-      "revision": "ff292cb12c4816ce21dab47cd9894b8046b16a93",
-      "url": "https://api.github.com/repos/abenz1267/walker/tarball/refs/tags/v2.5.5",
-      "hash": "sha256-xc0yW9OhLTppjkaWWCWG9q4BVJZbhnLqLniLeMkcTvM="
+      "version": "v2.9.3",
+      "revision": "6ade427b3cc347ad5363471c6c5fca46d8c81c9a",
+      "url": "https://api.github.com/repos/abenz1267/walker/tarball/refs/tags/v2.9.3",
+      "hash": "sha256-yJKjyURwPfH3QN5e4ettmhctgieBeKTx7z7huFtMhiQ="
     }
   },
-  "version": 6
+  "version": 7
 }

packetmix/systems/midnight/spindle.nix

···
 
   networking.firewall.allowedTCPPorts = [ 1024 ];
 
-  services.tangled-spindle = {
+  services.tangled.spindle = {
     enable = true;
     server = {
       listenAddr = "0.0.0.0:1024";

sprinkles/npins/default.nix

···
 */
 # Generated by npins. Do not modify; will be overwritten regularly
 let
-  data = builtins.fromJSON (builtins.readFile ./sources.json);
-  version = data.version;
+  # Backwards-compatibly make something that previously didn't take any arguments take some
+  # The function must return an attrset, and will unfortunately be eagerly evaluated
+  # Same thing, but it catches eval errors on the default argument so that one may still call it with other arguments
+  mkFunctor =
+    fn:
+    let
+      e = builtins.tryEval (fn { });
+    in
+    (if e.success then e.value else { error = fn { }; }) // { __functor = _self: fn; };
 
   # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/lists.nix#L295
   range =
···
 
   # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L269
   stringAsChars = f: s: concatStrings (map f (stringToCharacters s));
-  concatMapStrings = f: list: concatStrings (map f list);
   concatStrings = builtins.concatStringsSep "";
 
   # If the environment variable NPINS_OVERRIDE_${name} is set, then use
···
 
   mkSource =
     name: spec:
+    {
+      pkgs ? null,
+    }:
     assert spec ? type;
     let
+      # Unify across builtin and pkgs fetchers.
+      # `fetchGit` requires a wrapper because of slight API differences.
+      fetchers =
+        if pkgs == null then
+          {
+            inherit (builtins) fetchTarball fetchurl;
+            # For some fucking reason, fetchGit has a different signature than the other builtin fetchers …
+            fetchGit = args: (builtins.fetchGit args).outPath;
+          }
+        else
+          {
+            fetchTarball =
+              {
+                url,
+                sha256,
+              }:
+              pkgs.fetchzip {
+                inherit url sha256;
+                extension = "tar";
+              };
+            inherit (pkgs) fetchurl;
+            fetchGit =
+              {
+                url,
+                submodules,
+                rev,
+                name,
+                narHash,
+              }:
+              pkgs.fetchgit {
+                inherit url rev name;
+                fetchSubmodules = submodules;
+                hash = narHash;
+              };
+          };
+
+      # Dispatch to the correct code path based on the type
       path =
         if spec.type == "Git" then
-          mkGitSource spec
+          mkGitSource fetchers spec
         else if spec.type == "GitRelease" then
-          mkGitSource spec
+          mkGitSource fetchers spec
         else if spec.type == "PyPi" then
-          mkPyPiSource spec
+          mkPyPiSource fetchers spec
         else if spec.type == "Channel" then
-          mkChannelSource spec
+          mkChannelSource fetchers spec
         else if spec.type == "Tarball" then
-          mkTarballSource spec
+          mkTarballSource fetchers spec
+        else if spec.type == "Container" then
+          mkContainerSource pkgs spec
         else
           builtins.throw "Unknown source type ${spec.type}";
     in
···
 
   mkGitSource =
     {
+      fetchTarball,
+      fetchGit,
+      ...
+    }:
+    {
       repository,
       revision,
       url ? null,
       submodules,
       hash,
-      branch ? null,
       ...
     }:
     assert repository ? type;
     # At the moment, either it is a plain git repository (which has an url), or it is a GitHub/GitLab repository
     # In the latter case, there we will always be an url to the tarball
     if url != null && !submodules then
-      builtins.fetchTarball {
+      fetchTarball {
         inherit url;
         sha256 = hash;
       }
···
           "${if matched == null then "source" else builtins.head matched}${appendShort}";
         name = urlToName url revision;
       in
-      builtins.fetchGit {
+      fetchGit {
         rev = revision;
         narHash = hash;
 
···
       };
 
   mkPyPiSource =
-    { url, hash, ... }:
-    builtins.fetchurl {
+    { fetchurl, ... }:
+    {
+      url,
+      hash,
+      ...
+    }:
+    fetchurl {
       inherit url;
       sha256 = hash;
     };
 
   mkChannelSource =
-    { url, hash, ... }:
-    builtins.fetchTarball {
+    { fetchTarball, ... }:
+    {
+      url,
+      hash,
+      ...
+    }:
+    fetchTarball {
       inherit url;
       sha256 = hash;
     };
 
   mkTarballSource =
+    { fetchTarball, ... }:
     {
       url,
       locked_url ? url,
       hash,
       ...
     }:
-    builtins.fetchTarball {
+    fetchTarball {
       url = locked_url;
       sha256 = hash;
     };
+
+  mkContainerSource =
+    pkgs:
+    {
+      image_name,
+      image_tag,
+      image_digest,
+      ...
+    }:
+    if pkgs == null then
+      builtins.throw "container sources require passing in a Nixpkgs value: https://github.com/andir/npins/blob/master/README.md#using-the-nixpkgs-fetchers"
+    else
+      pkgs.dockerTools.pullImage {
+        imageName = image_name;
+        imageDigest = image_digest;
+        finalImageTag = image_tag;
+      };
 in
-if version == 6 then
-  builtins.mapAttrs mkSource data.pins
-else
-  throw "Unsupported format version ${toString version} in sources.json. Try running `npins upgrade`"
+mkFunctor (
+  {
+    input ? ./sources.json,
+  }:
+  let
+    data =
+      if builtins.isPath input then
+        # while `readFile` will throw an error anyways if the path doesn't exist,
+        # we still need to check beforehand because *our* error can be caught but not the one from the builtin
+        # *piegames sighs*
+        if builtins.pathExists input then
+          builtins.fromJSON (builtins.readFile input)
+        else
+          throw "Input path ${toString input} does not exist"
+      else if builtins.isAttrs input then
+        input
+      else
+        throw "Unsupported input type ${builtins.typeOf input}, must be a path or an attrset";
+    version = data.version;
+  in
+  if version == 7 then
+    builtins.mapAttrs (name: spec: mkFunctor (mkSource name spec)) data.pins
+  else
+    throw "Unsupported format version ${toString version} in sources.json. Try running `npins upgrade`"
+)

sprinkles/npins/sources.json

···
       },
       "branch": "monthly",
       "submodules": false,
-      "revision": "f44d7c3596ff028ad9f7fcc31d1941ed585f11b3",
-      "url": "https://github.com/nix-community/fenix/archive/f44d7c3596ff028ad9f7fcc31d1941ed585f11b3.tar.gz",
-      "hash": "sha256-6RzWfxENGlO73jQb3uQNgOvubUFwvveeIg+PZxhAu6s="
+      "revision": "3107255abfe4f2d1c3eee7a3e2f5a5eb6f2200fe",
+      "url": "https://github.com/nix-community/fenix/archive/3107255abfe4f2d1c3eee7a3e2f5a5eb6f2200fe.tar.gz",
+      "hash": "sha256-isqMvjTk3jdTHN6KA/BWQvOSVe7O35OQKAZNtLK76OY="
     },
     "nilla": {
       "type": "Git",
···
       },
       "branch": "main",
       "submodules": false,
-      "revision": "4e6038f4ebc89487194013af6a1e077dfeb00359",
-      "url": "https://github.com/nilla-nix/nilla/archive/4e6038f4ebc89487194013af6a1e077dfeb00359.tar.gz",
-      "hash": "sha256-7iLzbTLtgdFtm9em3xxHO9BunN2YpgYquMLKXh5hEpQ="
+      "revision": "b617bdbaa5faa9345ca077cd497372ece77bf119",
+      "url": "https://github.com/nilla-nix/nilla/archive/b617bdbaa5faa9345ca077cd497372ece77bf119.tar.gz",
+      "hash": "sha256-eCKqHY7uUiNqmP0XqWlXxpBLABuk65MRPLH2INFEE5U="
     },
     "nixpkgs": {
       "type": "Git",
···
       },
       "branch": "nixos-unstable",
       "submodules": false,
-      "revision": "a84ebe20c6bc2ecbcfb000a50776219f48d134cc",
-      "url": "https://github.com/nixos/nixpkgs/archive/a84ebe20c6bc2ecbcfb000a50776219f48d134cc.tar.gz",
-      "hash": "sha256-mNqIplmEohk5jRkqYqG19GA8MbQ/D4gQSK0Mu4LvfRQ="
+      "revision": "ae814fd3904b621d8ab97418f1d0f2eb0d3716f4",
+      "url": "https://github.com/nixos/nixpkgs/archive/ae814fd3904b621d8ab97418f1d0f2eb0d3716f4.tar.gz",
+      "hash": "sha256-YRqMDEtSMbitIMj+JLpheSz0pwEr0Rmy5mC7myl17xs="
     },
     "quickshell": {
       "type": "GitRelease",
···
       "version_upper_bound": null,
       "release_prefix": null,
       "submodules": false,
-      "version": "v0.2.0",
-      "revision": "a5431dd02dc23d9ef1680e67777fed00fe5f7cda",
+      "version": "v0.2.1",
+      "revision": "a1a150fab00a93ea983aaca5df55304bc837f51b",
       "url": null,
-      "hash": "sha256-vqkSDvh7hWhPvNjMjEDV4KbSCv2jyl2Arh73ZXe274k="
+      "hash": "sha256-e++Ogy91Sv7gGLMdAqZaBzbH/UmPWZ4GAt7VDCA66aU="
     }
   },
-  "version": 6
+  "version": 7
 }