Do not use constraints file for downstream test (#233)

.github/actions/base-setup/action.yml

@@ -114,7 +114,6 @@ runs:
         set -eux
         echo "::group::Upgrade packaging dependencies"
         python -m pip install --upgrade pip
-        pipx install uv
         if [ "$RUNNER_OS" != "Windows" ]; then
           pipx install hatch --python $(which python)
         else
@@ -126,25 +125,10 @@ runs:
       shell: bash
       run: |
         set -eux
-        FLAGS=""
         if [ $DEPENDENCY_TYPE == 'pre' ]; then
-          FLAGS="--prerelease=allow"
+          echo "PIP_PRE=1" >> $GITHUB_ENV
         elif [ $DEPENDENCY_TYPE == 'minimum' ]; then
-          FLAGS="--resolution=lowest-direct"
-        fi
-        if [ "$RUNNER_OS" == "Windows" ]; then
-          if [ -n "$FLAGS" ]; then
-            echo "dependency_type not supported on Windows"
-            exit 1
-          else
-            exit 0
-          fi
-        fi
-        if [ -f pyproject.toml ]; then
-          uv pip compile $FLAGS --extra test pyproject.toml -o $HOME/constraints.txt
-          echo "PIP_CONSTRAINT=$HOME/constraints.txt" >> $GITHUB_ENV
-        elif [ -n "$FLAGS" ]; then
-          echo "Missing pyproject.toml needed for DEPENDENCY_TYPE: $DEPENDENCY_TYPE"
+          source ${{ github.action_path }}/setup_constraints.sh
         fi
 
     - name: Print Diagnostics

.github/actions/base-setup/create_constraints_file.py

@@ -0,0 +1,35 @@
+import sys
+from pathlib import Path
+from zipfile import ZipFile
+
+from packaging.requirements import Requirement
+
+output_file = sys.argv[-2]
+fname = sys.argv[-1]
+constraints = {}
+
+archive = ZipFile(fname)
+reqs = []
+for f in archive.namelist():
+    if f.endswith("METADATA"):
+        for li in archive.open(f).read().decode("utf-8").split("\n"):
+            if li.startswith("Requires-Dist"):
+                reqs.append(li.replace("Requires-Dist: ", ""))
+archive.close()
+
+for req in reqs:
+    r = Requirement(req)
+    for specifier in r.specifier:
+        if "!" in specifier.operator:
+            continue
+        if "~" in specifier.operator or ">" in specifier.operator:
+            spec = str(specifier).replace("~", "=")
+            spec = spec.replace(">=", "==")
+            spec = spec.replace(">", "==")
+            constraints[r.name] = spec
+
+constraints_list = [f"{key}{value}\n" for (key, value) in constraints.items()]
+
+# Write the constraints to to a pip constraints file.
+with Path(output_file).open("w") as fid:
+    fid.writelines(constraints_list)

.github/actions/base-setup/setup_constraints.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+python -m venv $HOME/.venv
+source $HOME/.venv/bin/activate
+pip install build packaging pkginfo
+mkdir $HOME/dist
+python -m build --outdir $HOME/dist --wheel .
+
+SCRIPT_DIR=$(cd $(dirname "${BASH_SOURCE[0]}") && pwd)
+python $SCRIPT_DIR/create_constraints_file.py $HOME/constraints.txt $HOME/dist/*.whl
+cat $HOME/constraints.txt
+echo "PIP_CONSTRAINT=$HOME/constraints.txt" >> $GITHUB_ENV