Is it a good idea to add MSYS's PKG_CONFIG_PATH to UCRT64 environment?

[ynty]

Since some packages are MSYS-only which can only get in MSYS environment and UCRT64 environment cannot get the binary package of it (for example, GNU Guile).

The problem appears when using pkg-config:

# in UCRT64
$ pacman -S guile libguile-devel
$ pkg-config guile-3.0 --cflags
Package guile-3.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `guile-3.0.pc'
to the PKG_CONFIG_PATH environment variable
Package 'guile-3.0' not found

# in MSYS
$ pkg-config guile-3.0 --cflags
-I/usr/include/guile/3.0 -I/usr

This is because PKG_CONFIG_PATH are different in MSYS and UCRT64:

# in UCRT64
$ echo $PKG_CONFIG_PATH
/ucrt64/lib/pkgconfig:/ucrt64/share/pkgconfig

# in MSYS
$ echo $PKG_CONFIG_PATH
/usr/lib/pkgconfig:/usr/share/pkgconfig:/lib/pkgconfig

I don't want to give up using UCRT64 (since it means I need to re-install a lot of things under a new environment), so can I just modify UCRT64's PKG_CONFIG_PATH?

Like this:

/ucrt64/lib/pkgconfig:/ucrt64/share/pkgconfig:/usr/lib/pkgconfig:/usr/share/pkgconfig:/lib/pkgconfig