How to patch it? # ./pre-inst-env guix-build -K acl [...] gcc: error: /nix/store/iwvgjdll9yw44sixry38z003n1bzikz7-attr-2.4.46/lib/libattr.so: No such file or directory make[2]: *** [libacl.la] Error 1 make[2]: Leaving directory `/tmp/nix-build-k7515033a3ramdqzsgj231gyp60kmnn9-acl-2.2.51.drv-1/acl-2.2.51/libacl' make[1]: *** [libacl] Error 2 make[1]: Leaving directory `/tmp/nix-build-k7515033a3ramdqzsgj231gyp60kmnn9-acl-2.2.51.drv-1/acl-2.2.51' make: *** [default] Error 2 note: keeping build directory `/tmp/nix-build-k7515033a3ramdqzsgj231gyp60kmnn9-acl-2.2.51.drv-1' builder for `/nix/store/k7515033a3ramdqzsgj231gyp60kmnn9-acl-2.2.51.drv' failed with exit code 1 @ build-failed /nix/store/k7515033a3ramdqzsgj231gyp60kmnn9-acl-2.2.51.drv /nix/store/xk17p6kya207hhyvfla8nvaiv18wcf1l-acl-2.2.51 1 builder for `/nix/store/k7515033a3ramdqzsgj231gyp60kmnn9-acl-2.2.51.drv' failed with exit code 1 error: build failed: build of `/nix/store/k7515033a3ramdqzsgj231gyp60kmnn9-acl-2.2.51.drv' failed