update everything

npins/default.nix

@@ -9,8 +9,15 @@
 */
 # 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 =
@@ -21,7 +28,6 @@ let
 
   # 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
@@ -48,41 +54,87 @@ let
 
   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
     spec // { outPath = mayOverride name path; };
 
   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; # FIXME: check nix version & use SRI hashes
+        sha256 = hash;
       }
     else
       let
@@ -93,6 +145,8 @@ let
             "https://github.com/${repository.owner}/${repository.repo}.git"
           else if repository.type == "GitLab" then
             "${repository.server}/${repository.repo_path}.git"
+          else if repository.type == "Forgejo" then
+            "${repository.server}/${repository.owner}/${repository.repo}.git"
           else
             throw "Unrecognized repository type ${repository.type}";
         urlToName =
@@ -107,40 +161,89 @@ let
           "${if matched == null then "source" else builtins.head matched}${appendShort}";
         name = urlToName url revision;
       in
-      builtins.fetchGit {
+      fetchGit {
         rev = revision;
-        inherit name;
-        # hash = hash;
-        inherit url submodules;
+        narHash = hash;
+
+        inherit name submodules url;
       };
 
   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 == 5 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`"
+)