dprint-plugins: getPluginList helper

Signed-off-by: phanirithvij <phanirithvij2000@gmail.com>
Co-authored-by: Jörg Thalheim <Mic92@users.noreply.github.com>

pkgs/by-name/dp/dprint/plugins/default.nix

@@ -1,4 +1,8 @@
-{ lib, fetchurl }:
+{
+  lib,
+  fetchurl,
+  stdenv,
+}:
 let
   mkDprintPlugin =
     {
@@ -12,28 +16,32 @@ let
       license ? lib.licenses.mit,
       maintainers ? [ lib.maintainers.phanirithvij ],
     }:
-    fetchurl {
-      inherit
-        hash
-        url
-        pname
-        version
-        ;
-      name = "${pname}-${version}.wasm";
+    stdenv.mkDerivation (finalAttrs: {
+      inherit pname version;
+      src = fetchurl { inherit url hash; };
+      dontUnpack = true;
       meta = {
-        inherit
-          description
-          license
-          maintainers
-          ;
+        inherit description license maintainers;
       };
+      /*
+        in the dprint configuration
+        dprint expects a plugin path to end with .wasm extension
+
+        for auto update with nixpkgs-update to work
+        we cannot have .wasm extension at the end in the nix store path
+      */
+      buildPhase = ''
+        mkdir -p $out
+        cp $src $out/plugin.wasm
+      '';
       passthru = {
         updateScript = ./update-plugins.py;
         inherit initConfig updateUrl;
       };
-    };
+    });
   inherit (lib)
     filterAttrs
+    isDerivation
     mapAttrs'
     nameValuePair
     removeSuffix
@@ -45,5 +53,13 @@ let
     name: _:
     nameValuePair (removeSuffix ".nix" name) (import (./. + "/${name}") { inherit mkDprintPlugin; })
   ) files;
+  # Expects a function that receives the dprint plugin set as an input
+  # and returns a list of plugins
+  # Example:
+  # pkgs.dprint-plugins.getPluginList (plugins: [
+  #   plugins.dprint-plugin-toml
+  #   (pkgs.callPackage ./dprint/plugins/sample.nix {})
+  # ]
+  getPluginList = cb: map (p: "${p}/plugin.wasm") (cb plugins);
 in
-plugins // { inherit mkDprintPlugin; }
+plugins // { inherit mkDprintPlugin getPluginList; }

pkgs/by-name/dp/dprint/plugins/update-plugins.py

@@ -29,11 +29,9 @@ else:
 
 
 # get sri hash for a url, no unpack
-def nix_prefetch_url(url, name, algo="sha256"):
+def nix_prefetch_url(url, algo="sha256"):
     hash = (
-        subprocess.check_output(
-            ["nix-prefetch-url", "--type", algo, "--name", name, url]
-        )
+        subprocess.check_output(["nix-prefetch-url", "--type", algo, url])
         .decode("utf-8")
         .rstrip()
     )
@@ -119,7 +117,7 @@ def update_plugin_by_name(name):
     data = requests.get(p["updateUrl"]).json()
     p["url"] = data["url"]
     p["version"] = data["version"]
-    p["hash"] = nix_prefetch_url(data["url"], f"{name}-{data["version"]}.wasm")
+    p["hash"] = nix_prefetch_url(data["url"])
 
     write_plugin_derivation(p)
 
@@ -136,7 +134,7 @@ def update_plugins():
             pname = pname.replace("/", "-")
         drv_attrs = {
             "url": e["url"],
-            "hash": nix_prefetch_url(e["url"], f"{pname}-{e["version"]}.wasm"),
+            "hash": nix_prefetch_url(e["url"]),
             "updateUrl": update_url,
             "pname": pname,
             "version": e["version"],