Base ready

ops/cookbooks/vendor/mingw/files/default/custom_prefix.sh

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+# Prepend values from the parent environment to msys2 environment variables.
+
+export PKG_CONFIG_PATH="${PREMSYS2_PKG_CONFIG_PATH:+${PREMSYS2_PKG_CONFIG_PATH}:}${PKG_CONFIG_PATH}"
+
+# Instead of placing our entire windows path into msys2, we can selectively
+# prepend just the important parts that we need. This also ensures that
+# we don't accidentally add other unnecessary chef or git msys2 library
+# files in the path.
+export PATH="${PREMSYS2_PATH:+${PREMSYS2_PATH}:}${PATH}"
+
+# TODO: If there are other variabled we want to control like MANPATH or ACLOCALPATH,
+# add those here.
+