coreutils: Can't exec "/bin/sh": No such file or directory at ./man/help2man

coreutils: Can't exec "/bin/sh": No such file or directory at ./man/help2man

[Nikita Karetnikov]

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# ./pre-inst-env guix build -K --no-substitutes coreutils

[...]

Can't exec "/bin/sh": No such file or directory at ./man/help2man line 229.
help2man: can't get '--help' info from man/chroot.td/chroot
make[2]: *** [man/chroot.1] Error 2
make[2]: Leaving directory `/tmp/nix-build-coreutils-8.21.drv-3/coreutils-8.21'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/tmp/nix-build-coreutils-8.21.drv-3/coreutils-8.21'
make: *** [all] Error 2
phase `build' failed after 55 seconds
note: keeping build directory `/tmp/nix-build-coreutils-8.21.drv-3'
builder for `/nix/store/jyj752q3jjxj0xjgm7wh2xwhkckndab7-coreutils-8.21.drv' failed with exit code 1
@ build-failed /nix/store/jyj752q3jjxj0xjgm7wh2xwhkckndab7-coreutils-8.21.drv - 1 builder for `/nix/store/jyj752q3jjxj0xjgm7wh2xwhkckndab7-coreutils-8.21.drv' failed with exit code 1
guix build: error: build failed: build of `/nix/store/jyj752q3jjxj0xjgm7wh2xwhkckndab7-coreutils-8.21.drv' failed

/tmp/nix-build-coreutils-8.21.drv-3/coreutils-8.21# grep -r "/bin/sh" man

[...]

Binary file man/chroot.td/chroot matches

# strings chroot | grep /bin/sh
/bin/sh
If no command is given, run '${SHELL} -i' (default: '/bin/sh -i').

Can this be fixed with 'substitute*'?

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Re: coreutils: Can't exec "/bin/sh": No such file or directory at ./man/help2man

[Ludovic Courtès]

Nikita Karetnikov <nikita@karetnikov.org> skribis:

> # ./pre-inst-env guix build -K --no-substitutes coreutils

What’s the output path for that?  (See "out" in
/nix/store/jyj752q3jjxj0xjgm7wh2xwhkckndab7-coreutils-8.21.drv, for
instance.)

Which Guix commit is it, and which platform?

> [...]
>
> Can't exec "/bin/sh": No such file or directory at ./man/help2man line 229.
> help2man: can't get '--help' info from man/chroot.td/chroot
> make[2]: *** [man/chroot.1] Error 2

The line in question is:

    join '', map { s/ +$//; expand $_ } `$ARGV[0] $_ 2>/dev/null`

It could be that Perl’s backquote thing uses /bin/sh, but then we’d have
noticed it elsewhere too (on Hydra, on my laptop, etc.)

Is the daemon doing chroot builds and build users?

> Binary file man/chroot.td/chroot matches
>
> # strings chroot | grep /bin/sh
> /bin/sh
> If no command is given, run '${SHELL} -i' (default: '/bin/sh -i').
>
> Can this be fixed with 'substitute*'?

Yes, but that’s a different issue.  Actually, I would leave it as is,
because chroot honors $SHELL:

      /* No command.  Run an interactive shell.  */
      char *shell = getenv ("SHELL");
      if (shell == NULL)
        shell = bad_cast ("/bin/sh");

And also because in the GNU System there’ll be /bin/sh as a symlink to
the “current” Bash (as done on NixOS).

WDYT?

Thanks,
Ludo’.

Re: coreutils: Can't exec "/bin/sh": No such file or directory at ./man/help2man

[Nikita Karetnikov]

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> What’s the output path for that?  (See "out" in
> /nix/store/jyj752q3jjxj0xjgm7wh2xwhkckndab7-coreutils-8.21.drv, for
> instance.)

Derive([("out","/nix/store/5sinjj4bra3lx812fiz6p46pq35qj16j-coreutils-8.21","","")] [...]

> Which Guix commit is it, and which platform?

91a7fde45654b2d78cd791542e6a18dbbedd7297; i686.

> Is the daemon doing chroot builds and build users?

Yes, AFAICT.  I use 'guix-daemon --build-users-group=nixbld'.

Any other ideas?

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