compiling ocaml in a folder with space in its name creates a binary with an invalid shebang #12709
Description
Following on #11590, it is possible to install ocaml in a folder with spaces, but if that ocaml was compiled in a folder with spaces it will contain an invalid shebang.
See original investigation in ocaml/opam#5679, thanks to @kit-ty-kate for the help. Here are the steps to reproduce:
Creating a new switch from /tmp/my folder with spaces:
/tmp/my folder with spaces$ opam sw create . 5.1.0 --keep-build
<><> Installing new switch packages <><><><><><><><><><><><><><><><><><><><><><>
Switch invariant: ["ocaml-base-compiler" {= "5.1.0"} | "ocaml-system" {= "5.1.0"}]
<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
∗ installed base-bigarray.base
∗ installed base-threads.base
∗ installed base-unix.base
∗ installed ocaml-options-vanilla.1
⬇ retrieved ocaml-base-compiler.5.1.0 (cached)
∗ installed ocaml-base-compiler.5.1.0
∗ installed ocaml-config.3
[ERROR] The compilation of ocaml.5.1.0 failed at "ocaml /tmp/my folder with spaces/_opam/share/ocaml-config/gen_ocaml_config.ml 5.1.0 ocaml".
#=== ERROR while compiling ocaml.5.1.0 ========================================#
# context 2.2.0~alpha2 | linux/x86_64 | ocaml-base-compiler.5.1.0 | https://opam.ocaml.org#ad6e2e17
# path /tmp/my folder with spaces/_opam/.opam-switch/build/ocaml.5.1.0
# command ~/.opam/opam-init/hooks/sandbox.sh build ocaml /tmp/my folder with spaces/_opam/share/ocaml-config/gen_ocaml_config.ml 5.1.0 ocaml
# exit-code 1
# env-file ~/.opam/log/ocaml-2141670-5e79cc.env
# output-file ~/.opam/log/ocaml-2141670-5e79cc.out
### output ###
# bwrap: execvp ocaml: No such file or directory
<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
┌─ The following actions failed
│ λ build ocaml 5.1.0
└─
┌─ The following changes have been performed (the rest was aborted)
│ ∗ install base-bigarray base
│ ∗ install base-threads base
│ ∗ install base-unix base
│ ∗ install ocaml-base-compiler 5.1.0
│ ∗ install ocaml-config 3
│ ∗ install ocaml-options-vanilla 1
└─
Switch initialisation failed: clean up? ('n' will leave the switch partially installed) [y/n] n
No such file or directory is the output of the ocaml binary. If the clean up offered by opam was rejected, it is possible to reproduce the error by hand with
/tmp/my folder with spaces$ _opam/bin/ocaml
-bash: _opam/bin/ocaml: /tmp/my: bad interpreter: No such file or directory
The problem seems to come from the first line of the ocaml executable, which is the following:
#!/tmp/my folder with spaces/_opam/bin/ocamlrun
According to https://lists.gnu.org/archive/html/bug-bash/2008-05/msg00052.html it is not possible to have a shebang path with spaces in it. So there's probably no good solution. But I thought it could be worth reporting anyway.