bug#56030: The guix pull profile is too big

[Maxime Devos]

On 17-06-2022 07:48, Julien Lepiller wrote:

> We
>       have bash-minimal and bash-static. The latter is a bit bigger than
>       the former. Maybe we can keep only bash-minimal?
>

bash-static is used by glibc (for the 'system' function), it's not something that can simply be replaced with bash-minimal (due to the cycle bash-minimal -> glibc -> bash-minimal that would result). I do have a proposal eliminating the bash-static reference though:

• replace the 'system' function from glibc by a variant that accepts the file name of the shell executable
  
• Add a macro '#define system ...' that calls this variant and inserts __guix_bin_sh as the shell executable
• In the build system, look for bin/sh in the inputs.  If it exists, add -D__guix_bin_sh=/gnu/store/.../bin/sh to
  CFLAGS or such.
  

Greetings,
Maxime

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