Specify old pip behaviour in yaml file

Specifying it in the setup.cfg file didn't seem to work, so try in line

Author: AlexanderWells-diamond

.github/workflows/code.yml

@@ -81,6 +81,7 @@ jobs:
       - name: Build Wheel
         run: cibuildwheel --output-dir dist
         env:
+          PIP_USE_DEPRECATED: out-of-tree-build
           CIBW_BUILD: ${{ matrix.python }}*64
           CIBW_TEST_EXTRAS: dev
           CIBW_TEST_COMMAND: pytest {project}/tests --cov-report xml:${{ matrix.cov_file }} --junit-xml=${{ matrix.results_file }}

setup.cfg

@@ -64,12 +64,3 @@ addopts =
 [coverage:run]
 # This is covered in the versiongit test suite so exclude it here
 omit = */_version_git.py
-
-# cibuildwheel 2.3.0 upgraded to pip v21.3, which no longer completely copies the
-# source directory before building, so the symlink'd "iocStatsDb" folder isn't included
-# in built wheels. This is a temporary fix for that, until pip drops support for this option.
-# The long term fix is to revamp how we include the iocStatsDb folder.
-# https://github.com/pypa/cibuildwheel/issues/962
-# https://github.com/pypa/pip/issues/7555
-[tool.cibuildwheel.environment]
-PIP_USE_DEPRECATED = "out-of-tree-build"