Do not install cmake via pip in manylinux build.

Installing cmake via pip in the manylinux environment can lead to compatibility issues with the system's native compiler.
Instead, rely on the system-installed version of cmake to ensure better compatibility and stability during the build process.

Author: rabyj

pyproject.toml

@@ -51,9 +51,10 @@ epigeec = [
 build = ["cp311-*", "cp312-*", "cp313-*"]
 skip = ["*-musllinux*", "*-manylinux_i686"] # ignore 32-bit Linux builds
 before-build = [
-    "pip install cmake",
     "cmake .",
     "make -j $(nproc || echo 4)",
+    "echo '--- Filesystem after make ---'",
+    "ls -R"
 ]
 
 [tool.cibuildwheel.linux]