Blame fix-pip-build-21.1.patch

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diff --git a/interfaces/cython/SConscript b/interfaces/cython/SConscript
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index 07d383a..8909146 100644
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--- a/interfaces/cython/SConscript
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+++ b/interfaces/cython/SConscript
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@@ -107,7 +107,7 @@ ext = localenv.LoadableModule(f"cantera/_cantera{module_ext}",
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                               obj, LIBPREFIX="", SHLIBSUFFIX=module_ext,
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                               SHLIBPREFIX="", LIBSUFFIXES=[module_ext])
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-build_cmd = ("$python_cmd_esc -m pip wheel -v --no-build-isolation --use-feature=in-tree-build --no-deps "
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+build_cmd = ("$python_cmd_esc -m pip wheel -v --no-build-isolation --no-deps "
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              "--wheel-dir=build/python/dist build/python")
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 plat = info['plat'].replace('-', '_').replace('.', '_')
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 wheel_name = (f"Cantera-{env['cantera_version']}-cp{py_version_nodot}"
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@@ -172,7 +172,7 @@ if env["stage_dir"]:
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     install_cmd.append(f"--root={stage_dir.resolve()}")
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-install_cmd.extend(("--no-build-isolation", "--use-feature=in-tree-build", "--no-deps", "-v", "--force-reinstall",
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+install_cmd.extend(("--no-build-isolation", "--no-deps", "-v", "--force-reinstall",
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                     "build/python"))
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 if localenv['PYTHON_INSTALLER'] == 'direct':
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     mod_inst = install(localenv.Command, 'dummy', mod,