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

[Nikita Karetnikov]

# ./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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