test: reenable setuptools coverage build

.coveragerc.setuptools

@@ -0,0 +1,2 @@
+[run]
+plugins = Cython.Coverage

.github/workflows/buildwheel.yml

@@ -17,7 +17,7 @@ jobs:
 
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: '3.13'
 
       - uses: msys2/setup-msys2@v2
         with:
@@ -65,7 +65,7 @@ jobs:
 
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: '3.13'
 
       - run: bin/install_latest_flint_ubuntu.sh
       - run: pip install build
@@ -111,7 +111,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: '3.13'
       - run: sudo apt-get update
       - run: sudo apt-get install libflint-dev
       - run: pip install .
@@ -124,7 +124,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: '3.13'
       - run: bin/install_latest_flint_ubuntu.sh
       - run: pip install --upgrade pip
       - run: pip install -r requirements-dev.txt
@@ -139,7 +139,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: '3.13'
       - run: sudo apt-get update
       - run: sudo apt-get install libflint-dev
       # The versions of cython and meson-python here should be kept in sync
@@ -149,7 +149,7 @@ jobs:
       # We don't need to specify ninja as a requirement in pyproject.toml
       # because without --no-build-isolation meson-python handles it
       # automatically in get_requirements_for_build_wheel().
-      - run: 'pip install "cython==3.0" "meson-python==0.13" "ninja<1.11"'
+      - run: 'pip install "cython==3.0.11" "meson-python==0.13" "ninja<1.11"'
       - run: pip install --no-build-isolation .
       - run: python -m flint.test --verbose
 
@@ -166,7 +166,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: '3.13'
       - run: bin/install_flint_ubuntu.sh ${{ matrix.flint-tag }}
       - run: pip install .
       - run: python -m flint.test --verbose
@@ -179,26 +179,37 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: '3.13'
       - run: bin/install_flint_ubuntu.sh main
       # Need to disable flint version check to build against main
       - run: pip install --config-settings=setup-args="-Dflint_version_check=false" .
       - run: python -m flint.test --verbose
 
   # Test that we can make a coverage build and report coverage
-  test_coverage_build:
+  test_coverage_build_setuptools:
     name: Test coverage setuptools build
     runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: '3.13'
+      - run: sudo apt-get update
+      - run: sudo apt-get install libflint-dev
+      - run: pip install -r requirements-dev.txt
+      - run: bin/coverage_setuptools.sh
+
+  # Test that we can make a coverage build and report coverage
+  test_coverage_build_meson:
+    name: Test coverage meson build
+    runs-on: ubuntu-24.04
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.12' # does not work with 3.13
       - run: sudo apt-get update
       - run: sudo apt-get install libflint-dev
-      # Need Cython's master branch until 3.1 is released because of:
-      # https://github.com/cython/cython/pull/6341
-      - run: pip install git+https://github.com/cython/cython.git@master
       - run: pip install -r requirements-dev.txt
       - run: bin/coverage.sh
 
@@ -210,7 +221,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-24.04]
-        python-version: ['3.13-dev']
+        python-version: ['3.13', '3.14-dev']
     steps:
       - uses: actions/checkout@v4
       # Can't use actions/setup-python
@@ -245,7 +256,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: '3.13'
       - run: sudo apt-get update
       - run: sudo apt-get install libflint-dev
       - run: pip install .

bin/activate

@@ -1,3 +1,4 @@
 export C_INCLUDE_PATH=$(pwd)/.local/include
 export LIBRARY_PATH=$(pwd)/.local/lib
 export LD_LIBRARY_PATH=$(pwd)/.local/lib
+export PKG_CONFIG_PATH=$(pwd)/.local/lib/pkgconfig

bin/coverage.sh

@@ -1,21 +1,24 @@
 #!/bin/bash
 #
-# This needs a patched Cython:
-#
-#   pip install git+https://github.com/oscarbenjamin/cython.git@pr_relative_paths
-#
-# That patch has been submitted as a pull request:
-#
-#   https://github.com/cython/cython/pull/6341
-#
 # Arguments to this script are passed to python -m flint.test e.g. to skip
 # doctests and run in quiet mode:
 #
 #    bin/coverage.sh -qt
 #
 set -o errexit
 
+RC="--rcfile=.coveragerc.meson"
+
+# See https://github.com/cython/cython/issues/6658
+# Needed for Python 3.13 only but the plugin does not work with 3.13 anyway...
+#pip uninstall -y cython
+#pip install git+https://github.com/cython/cython.git@fdbca99
+
+pip uninstall -y cython
+pip install --pre cython       # unpinned to pick up new releases in CI
+# pip install cython==3.1.0a1  # known working version for Python < 3.13
+
 meson setup build -Dcoverage=true
-spin run -- coverage run -m flint.test $@
-coverage report -m --sort=cover
-coverage html
+spin run -- coverage run $RC -m flint.test $@
+coverage report $RC -m --sort=cover
+coverage html $RC

bin/coverage_setuptools.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+set -e
+
+RC="--rcfile=.coveragerc.setuptools"
+
+# Comment out various lines below for speed if running multiple times.
+
+# See https://github.com/cython/cython/issues/6658
+# Needed for Python 3.13 only
+pip uninstall -y cython
+pip install git+https://github.com/cython/cython.git@fdbca99
+pip install setuptools
+
+touch src/*/*/*.pyx
+PYTHON_FLINT_COVERAGE=1 python setup.py build_ext --inplace
+PYTHONPATH=src coverage run $RC -m flint.test
+coverage report $RC -m --sort=cover
+coverage html $RC

coverage_plugin.py

@@ -128,6 +128,7 @@ class CyFileTracer(FileTracer):
     """File tracer for Cython files (.pyx,.pxd)."""
 
     def __init__(self, srcpath):
+        print(srcpath)
         assert (src_dir / srcpath).exists()
         self.srcpath = srcpath
 

meson.build

@@ -1,4 +1,9 @@
-project('python-flint', 'cython', 'c')
+project(
+  'python-flint',
+  'cython',
+  'c',
+  meson_version : '>=1.1',
+)
 #
 # The minimum versions are because we know that it will not work with earlier
 # versions. The maximum versions are because python-flint was not tested
@@ -8,7 +13,7 @@ project('python-flint', 'cython', 'c')
 #
 flint_lower = '>=3.0'
 flint_upper = '<3.2'
-cython_lower = '>=3.0'
+cython_lower = '>=3.0.11'
 cython_upper = '<3.2'
 
 py = import('python').find_installation(pure: false)

pyproject.toml

@@ -36,7 +36,7 @@ content-type = "text/markdown"
 # until we have actually witnessed a Cython 3.x release that does not break the
 # build we should keep the upper cap.
 #
-requires = ["meson-python>=0.13", "cython>=3.0,<3.1"]
+requires = ["meson-python>=0.13", "cython>=3.0.11,<3.1"]
 build-backend = "mesonpy"
 
 [tool.cython-lint]

src/flint/flintlib/types/gr.pxd

@@ -8,9 +8,15 @@ from flint.flintlib.types.flint cimport (
 cdef extern from *:
     """
     /*
-     * The following functions were introduced in FLINT 3.2.0
+     * The following functions were introduced in FLINT 3.1.0
      */
+    #if __FLINT_RELEASE < 30100
+    #define gr_div_nonunique(res, x, y, ctx) GR_UNABLE
+    #endif
 
+    /*
+     * The following functions were introduced in FLINT 3.2.0
+     */
     #if __FLINT_RELEASE < 30200
     #define gr_min(res, x, y, ctx) GR_UNABLE
     #define gr_max(res, x, y, ctx) GR_UNABLE

src/flint/types/_gr.pyx

@@ -1708,7 +1708,7 @@ cdef class gr(flint_scalar):
 
             >>> from flint.types._gr import gr_complex_acb_ctx
             >>> acb = gr_complex_acb_ctx.new(53)
-            >>> x = acb("pi")
+            >>> x = acb("2")
             >>> x.parent()
             gr_complex_acb_ctx(53)
         """