package definition question: installation into system directory

[Andy Tai]

Hi, I was trying to create a package definition for xrdp.
when testing the package build, its fails at installation step:

libtool: install:
/gnu/store/a5i8avx826brw5grn3n4qv40g514505c-coreutils-9.1/bin/install
-c .libs/xrdp-sesman
/gnu/store/6rfpjdc3vcsfw3yi1cr42g81pd1lw63l-xrdp-0.9.22.1/sbin/xrdp-sesman
 /gnu/store/a5i8avx826brw5grn3n4qv40g514505c-coreutils-9.1/bin/mkdir
-p '/etc/xrdp'
/gnu/store/a5i8avx826brw5grn3n4qv40g514505c-coreutils-9.1/bin/mkdir:
cannot create directory ‘/etc/xrdp’: Permission denied
make[3]: *** [Makefile:690: install-dist_sesmansysconfDATA] Error 1


clearly it was trying to install (some PAM related file) into /etc
which fails.  Curious how should such scenario be handled? Thanks