Marius Bakke <mbakke@fastmail.com> writes:

> Guix,
>
> Here are patches that allow building the world with GCC7.
>
> The cross-toolchain and bootstrap tarballs need more work, but native
> x86_64 at least is largely fine.
>
> Marius Bakke (8):
>   gnu: Remove gcc-for-libstdc++.
>   gnu: libstdc++-boot0: Improve gcc-wrapper workaround.
>   gnu: gcc-boot0: Improve gcc-wrapper workarounds.
>   gnu: Remove duplicate linux-libre-headers package from bootstrap
>     inputs.
>   gnu: Use GCC 7 as the default compiler.
>   gnu: python: Fix FTBFS with GCC >= 6.
>   gnu: cmake: Try CPATH and C_INCLUDE_PATH when finding system
>     libraries.
>   gnu: cppunit: Update to 1.14.0.

I've pushed these to 'wip-gcc7' on Savannah for easier access:

https://git.savannah.gnu.org/cgit/guix.git/log/?h=wip-gcc7