I was building a guix pack with guix pack --symlink=/bin=bin --relocatable --relocatable --no-substitutes gcc-toolchain gnupg
and got the following error Backtrace: 3 (primitive-load "/gnu/store/n8zm1bjf4mrz4250c51ljasy8pc…") In guix/build/profiles.scm: 157:2 2 (build-profile "/gnu/store/9rqqgpv3nq5nqs9yik9zlzniz9q…" …) In unknown file: 1 (hash-for-each #<procedure 7fffefbb9f40 at guix/build/…> …) In guix/build/union.scm: 144:11 0 (_ _ _) guix/build/union.scm:144:11: union-build: collision between file and directories ((files ("/gnu/store/rgyjhfkb5sxcyy362i3bshh80v6giq2c-gcc-toolchain-10.1.0R/sbin")) (dirs ("/gnu/store/i1339a5cj1y53z3zgny2wls47kxzy48r-gnupg-2.2.20R/sbin"))) /gnu/store/rgyjhfkb5sxcyy362i3bshh80v6giq2c-gcc-toolchain-10.1.0R/sbin seems to be a statically linked executable even though 3kvnslc16sy7kwi2c5r7r5k6bbv2p03f-gcc-toolchain-10.1.0/sbin is a symlink pointing to /gnu/store/fa6wj5bxkj5ll1d7292a70knmyl7a0cr-glibc-2.31/sbin This makes gcc-toolchain and gnupg non co-installable.