Someone (sorry, I forget who) mentioned in #guix that we can use binfmt_misc to handle the shebang.
I tried coding it in C, and it seems to working fine. Here it is: <https://github.com/iyzsong/duang>. Try it with care: --8<---------------cut here---------------start------------->8--- $ sudo mount -t binfmt_misc binfmt_misc /proc/sys/fs/binfmt_misc $ git clone https://github.com/iyzsong/duang.git $ cd duang $ make $ sudo make install $ sudo make register --8<---------------cut here---------------end--------------->8--- This will install the handler into `/libexec/@', and register it in `/proc/sys/fs/binfmt_misc/duang'. With it activated, intepreter in the shebang doesn't need to be absolute path, and can handle multiple arguments, eg: `#!emacs -Q --script'. And when the interpreter in absolute path is not exist, it will fallback to be searched in the PATH, so `#!/usr/bin/perl -w' equals to `#!perl -w'. On GuixSD, this means if we remove the `/bin/sh' symlink, the sh-scripts will fallbacked to use `sh' in PATH, so we can remove /bin. I dunno if it's a good idea though :-)
