Relax pyyaml versioning during building

e27d50d moved the yaml dependency
from runtime to dev and updated the version from 5.1 to 5.4 (not 6.0
as that dropped Python 2.7 compatibility), but that turns out to cause
issues for people who can't / won't download pyyaml on the fly and
require building to work with preinstalled packages, as building
regexes now refuses to work with a locally available 6.0.

Remove version bound on pyyaml (though a `>=` bound might also have
worked), but add a bunch of tests to ensure the regexes build on all
supported versions of Python, and pyyaml (also reinstate 5.1 for that
purpose only).

Fixes #121

Author: masklinn

.github/workflows/ci.yml

@@ -27,6 +27,32 @@ jobs:
     - name: black
       run: black --check --diff --color --quiet .
 
+  compile:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["2.7", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11.0-alpha - 3.11", "pypy-3.8"]
+        pyyaml-version: ["5.1.*", "5.4.*", "6.0.*", "6.*"]
+
+    steps:
+    - name: Checkout working copy
+      uses: actions/checkout@v3
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v3
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependency
+      run: |
+        python -mpip install --upgrade pip
+        python -mpip install pyyaml==${{ matrix.pyyaml-version }}
+    - name: Build regexes.py
+      run: python setup.py build_regexes
+    - name: Check results
+      run: |
+        # check that _regexes exists, and .eggs does not (== setuptools used our dependency)
+        test -e ua_parser/_regexes.py -a ! -e .eggs
+
   test:
     runs-on: ubuntu-latest
     strategy:

setup.py

@@ -210,7 +210,7 @@ class sdist(_sdist):
     zip_safe=False,
     url="https://github.com/ua-parser/uap-python",
     include_package_data=True,
-    setup_requires=["pyyaml ~= 5.4.0"],
+    setup_requires=["pyyaml"],
     install_requires=[],
     cmdclass=cmdclass,
     classifiers=[