Dependency umu-launcher is unproporionally large and is likely to time out when fetched

[Sntx626]

This is the error I get when trying to run nix flake update in my system configuration.

[7.0 MiB DL] fetching Git repository 'https://github.com/Open-Wine-Components/umu-launcher/'error: RPC failed; curl 92 HTTP/2 stream 5 was not closed cleanly: CANCEL (err 8)
error: 7586 bytes of body are still expected
fetch-pack: unexpected disconnect while reading sideband packet
fatal: early EOF
fatal: fetch-pack: invalid index-pack output
error:
       … while updating the lock file of flake 'git+file:///home/sntx/Documents/projects/2024-04-02_hive'

       … while updating the flake input 'nix-gaming'

       … while updating the flake input 'nix-gaming/umu'

       … while fetching the input 'git+https://github.com/Open-Wine-Components/umu-launcher/'

       error: program 'git' failed with exit code 128

I recognise this is likely an upstream issue, but wanted to raise awareness here first.

Would it be feasable to pin umu-launcher to a specific commit to avoid redownloading it on nix flake update?

[fufexan]

From what I've noticed while testing, having an unreliable connection causes git to fail the download.

Here's what I've come up with: using npins to track the repo, and hackily importing the flake (could be done with flake-compat instead) to get the package. Though this suffers from the same problem, at least it's deferred to wherever umu is needed.

umu.diff

diff --git a/flake.lock b/flake.lock
index 63c3198..8edb4ae 100644
--- a/flake.lock
+++ b/flake.lock
@@ -49,32 +49,7 @@
     "root": {
       "inputs": {
         "flake-parts": "flake-parts",
-        "nixpkgs": "nixpkgs",
-        "umu": "umu"
-      }
-    },
-    "umu": {
-      "inputs": {
-        "nixpkgs": [
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "dir": "packaging/nix",
-        "lastModified": 1727227288,
-        "narHash": "sha256-82fIhNN93zk0vmc5rltsbYJlD96AHzEFY2q1KizLP0A=",
-        "ref": "refs/heads/main",
-        "rev": "5cc1c3f23e2ecc9e03267c097e990d1702416852",
-        "revCount": 730,
-        "submodules": true,
-        "type": "git",
-        "url": "https://github.com/Open-Wine-Components/umu-launcher/?dir=packaging/nix"
-      },
-      "original": {
-        "dir": "packaging/nix",
-        "submodules": true,
-        "type": "git",
-        "url": "https://github.com/Open-Wine-Components/umu-launcher/?dir=packaging/nix"
+        "nixpkgs": "nixpkgs"
       }
     }
   },
diff --git a/flake.nix b/flake.nix
index 8529b1d..5b3eecb 100644
--- a/flake.nix
+++ b/flake.nix
@@ -4,10 +4,6 @@
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
     flake-parts.url = "github:hercules-ci/flake-parts";
-    umu = {
-      url = "git+https://github.com/Open-Wine-Components/umu-launcher/?dir=packaging\/nix&submodules=1";
-      inputs.nixpkgs.follows = "nixpkgs";
-    };
   };
 
   outputs = {self, ...} @ inputs:
diff --git a/npins/sources.json b/npins/sources.json
index f8420c4..d7f2c4d 100644
--- a/npins/sources.json
+++ b/npins/sources.json
@@ -117,6 +117,17 @@
       "url": "https://github.com/GloriousEggroll/proton-wine/archive/39021e609a24b6aeffdf9c4695a286d71e7dffbc.tar.gz",
       "hash": "000d5kba7vs5nc1sc3946jkpqmch4w09qz74i5zgc7nh7znck6f8"
     },
+    "umu-launcher": {
+      "type": "Git",
+      "repository": {
+        "type": "Git",
+        "url": "https://github.com/open-wine-components/umu-launcher"
+      },
+      "branch": "main",
+      "revision": "5cc1c3f23e2ecc9e03267c097e990d1702416852",
+      "url": null,
+      "hash": "0xy0iybrk2avxhij0mm7w0sjwyszhisjphkl13xdl2jvvivfzksm"
+    },
     "vkd3d-proton": {
       "type": "GitRelease",
       "repository": {
diff --git a/pkgs/default.nix b/pkgs/default.nix
index cb5fbbd..9afe12e 100644
--- a/pkgs/default.nix
+++ b/pkgs/default.nix
@@ -31,8 +31,14 @@
           }
           // extra))
         .${wine};
+
+      umu-src = import "${pins.umu-launcher}/packaging/nix/flake.nix";
+      umu-flake = umu-src.outputs {
+        self = umu-flake;
+        inherit (inputs) nixpkgs;
+      };
     in {
-      inherit (inputs.umu.packages.${system}) umu;
+      inherit (umu-flake.packages.${system}) umu;
       dxvk = pkgs.callPackage ./dxvk {inherit pins;};
       dxvk-w32 = pkgs.pkgsCross.mingw32.callPackage ./dxvk {inherit pins;};
       dxvk-w64 = pkgs.pkgsCross.mingwW64.callPackage ./dxvk {inherit pins;};