chore: Move from Poetry to UV

Bumping to Poetry 2 seems to be more problematic than switching to uv
https://github.com/astral-sh/uv

Given the main maintainer of poetry2nix now works on uv2nix it does not
seem to be a bad bet to switch.
nix-community/poetry2nix@f554d27

Part of request #41796 Update dev/build environment [W07 2025]

.gitpod.Dockerfile

@@ -20,7 +20,7 @@ RUN touch .bash_profile \
 
 RUN echo '. /home/gitpod/.nix-profile/etc/profile.d/nix.sh' >> /home/gitpod/.bashrc
 
-COPY shell.nix pyproject.toml poetry.lock /tmp/
+COPY shell.nix pyproject.toml uv.lock /tmp/
 COPY build-support/*.nix /tmp/build-support/
 
 RUN . /home/gitpod/.nix-profile/etc/profile.d/nix.sh && nix-build --no-out-link /tmp/shell.nix

build-support/build-tools.nix

@@ -1,45 +1,25 @@
 { pkgs ? (import ./pinned-nixpkgs.nix) { } }:
-[
+let
+  pythonWorkspace = pkgs.uv2nix.lib.workspace.loadWorkspace { workspaceRoot = ../.; };
+  pythonSet = (pkgs.callPackage pkgs.pyproject-nix.build.packages {
+    python = pkgs.python3;
+  }).overrideScope
+    (
+      pkgs.lib.composeManyExtensions [
+        pkgs.pyproject-build-systems
+        (pythonWorkspace.mkPyprojectOverlay { sourcePreference = "wheel"; })
+        (final: prev: {
+          markupsafe = prev.markupsafe.overrideAttrs(old: {
+            buildInputs = (old.buildInputs or [ ]) ++ final.resolveBuildSystem ( {setuptools = [];});
+          });
+        })
+      ]
+    );
+  pythonVirtualenv = pythonSet.mkVirtualEnv "build-deps" pythonWorkspace.deps.all;
+in [
   pkgs.gnumake
   pkgs.gnugrep
   pkgs.gnused
   pkgs.gawk
-  (pkgs.poetry2nix.mkPoetryEnv {
-    projectDir = ../.;
-    # Some overrides are needed because some packages does not define their build deps correctly
-    # or do not respect PEP 440 when defining the version
-    # https://github.com/nix-community/poetry2nix/blob/master/docs/edgecases.md
-    overrides = pkgs.poetry2nix.defaultPoetryOverrides.extend (
-      self: super: {
-        sphinx = super.sphinx.overridePythonAttrs (
-          old: {
-            buildInputs = (old.buildInputs or [ ]) ++ [ self.flit-core ];
-          }
-        );
-        sphinx-autobuild = super.sphinx-autobuild.overridePythonAttrs (
-          old: {
-            buildInputs = (old.buildInputs or [ ]) ++ [ self.flit-core ];
-          }
-        );
-        sphinx-notfound-page = super.sphinx-notfound-page.overridePythonAttrs (
-          old: {
-            buildInputs = (old.buildInputs or [ ]) ++ [ self.flit-core ];
-          }
-        );
-        sphinxcontrib-jquery = super.sphinxcontrib-jquery.overridePythonAttrs (
-          old: {
-            buildInputs = (old.buildInputs or [ ]) ++ [ self.flit-core ];
-          }
-        );
-        sphinxext-rediraffe = super.sphinxext-rediraffe.overridePythonAttrs (
-          old: {
-            buildInputs = (old.buildInputs or [ ]) ++ [ super.setuptools ];
-            postPatch = ''
-              substituteInPlace setup.py --replace 'version = "main"' 'version = "${old.version}"'
-            '';
-          }
-        );
-      }
-    );
-  })
+  pythonVirtualenv
 ]

build-support/dev-tools.nix

@@ -1,6 +1,6 @@
 { pkgs }:
 [
-  pkgs.poetry
+  pkgs.uv
   pkgs.nodejs-slim
   pkgs.nodePackages.npm
 ]

build-support/linkcheck-docker.dockerfile

@@ -1,6 +1,6 @@
 FROM nixos/nix:2.26.2@sha256:3bb728719e2c4e478df4c50b80f93adbe27d5c561d1417c3a2306eb914d910da
 
 COPY build-support/*.nix /build-support/
-COPY pyproject.toml poetry.lock /
+COPY pyproject.toml uv.lock /
 
 RUN nix-env -i -f build-support/build-tools.nix

build-support/pinned-nixpkgs.nix

@@ -5,11 +5,16 @@ let
     url = "https://github.com/NixOS/nixpkgs/archive/5083ec887760adfe12af64830a66807423a859a7.tar.gz";
     sha256 = "sha256-D1FNZ70NmQEwNxpSSdTXCSklBH1z2isPR84J6DQrJGs=";
   } ) {};
-  poetry2nixsrc = builtins.fetchTarball {
-    url = "https://github.com/nix-community/poetry2nix/archive/refs/tags/2024.11.109713.tar.gz";
-    sha256 = "sha256:04nvlp0lp2kxycdywq0avzxpvyj69iij8xvl6havjmpm26dpbcqp";
-  };
-  poetry2nix = import poetry2nixsrc {
-    pkgs = pinnedNixpkgs;
-  };
-in pinnedNixpkgs // { inherit poetry2nix; }
+  pyproject-nix = import (builtins.fetchTarball {
+    url = "https://github.com/pyproject-nix/pyproject.nix/archive/1329712f7f9af3a8b270764ba338a455b7323811.tar.gz";
+    sha256 = "sha256:1yvqfc6akbimflhgp5b6b4q57rmahgs96m81zbx7gv0299sbi1h2";
+  }) { lib = pinnedNixpkgs.lib; };
+  uv2nix = import (builtins.fetchTarball {
+    url = "https://github.com/pyproject-nix/uv2nix/archive/846ad27167bf6a855c56753ba8360759bfb6f456.tar.gz";
+    sha256 = "sha256:0ivbg4szn2p6xvjrm9qg9xh8nhd3p7lh88qln596f2kchvv4aysm";
+  }) { lib = pinnedNixpkgs.lib; inherit pyproject-nix; };
+  pyproject-build-systems = import (builtins.fetchTarball {
+    url = "https://github.com/pyproject-nix/build-system-pkgs/archive/53700950d05fc2dd67228277ff1729964d2e7ffd.tar.gz";
+    sha256 = "sha256:1aipbbwpidzyb4gxpgsc5fr7hiv2xy1zp3400rzzqqkjxd0vr0s8";
+  }) { lib = pinnedNixpkgs.lib; inherit pyproject-nix uv2nix; };
+in pinnedNixpkgs // { inherit pyproject-nix uv2nix pyproject-build-systems; }