Re: ghc-pkg: No such file or directory

[ludo@gnu.org (Ludovic Courtès)]

Nikita Karetnikov <nikita@karetnikov.org> skribis:

> I'm trying to package a binary version of GHC (attached), which fails
> with the following error:
>
> /nix/store/snrdydzbrw9aqnz569k73dmk67wn1akv-my-coreutils-8.20/bin/install -c -m 755 -d "/nix/store/gy7g3k7bwpaf7pvm70d0rn8xh8b7rq6h-ghc-bin-7.0.1/lib/ghc-7.0.1/package.conf.d"
> "/nix/store/gy7g3k7bwpaf7pvm70d0rn8xh8b7rq6h-ghc-bin-7.0.1/lib/ghc-7.0.1/ghc-pkg" --force --global-conf "/nix/store/gy7g3k7bwpaf7pvm70d0rn8xh8b7rq6h-ghc-bin-7.0.1/lib/ghc-7.0.1/package.conf.d" update libffi/package.conf.install
> /nix/store/zkg7nnj03yp6pg9gx8wq3lpalr4ffw71-bash-4.2/bin/sh: /nix/store/gy7g3k7bwpaf7pvm70d0rn8xh8b7rq6h-ghc-bin-7.0.1/lib/ghc-7.0.1/ghc-pkg: No such file or directory

Most likely that’s because of the ELF interpreter, which needs to be
patched.

Try ‘strings .../ghc-pkg | grep ld-linux’, and notice how the file name
is wrong.

PatchELF allows you to fix that.

> I'm not sure what causes the problem.  I don't see anything strange in
> makefiles.  Should I patch executables?  Here is a relevant snippet from
> '6.12.1-binary.nix':
>
>     (if stdenv.isLinux then ''
>       find . -type f -perm +100 \
>           -exec patchelf --interpreter "$(cat $NIX_GCC/nix-support/dynamic-linker)" \
>           --set-rpath "${ncurses}/lib:${gmp}/lib" {} \;

This part is what I’m referring to.

>       sed -i "s|/usr/bin/perl|perl\x00        |" ghc-${version}/ghc/stage2/build/tmp/ghc-stage2
>       sed -i "s|/usr/bin/gcc|gcc\x00        |" ghc-${version}/ghc/stage2/build/tmp/ghc-stage2
>       for prog in ld ar gcc strip ranlib; do
>         find . -name "setup-config" -exec sed -i "s@/usr/bin/$prog@$(type -p $prog)@g" {} \;
>       done
>      '' else "");

You may need to port these tricks as well.  :-)

HTH,
Ludo’.