Cannot bootstrap on macOS with CUDA

[kayhide]

I got hit by the problem which is reported on https://gitlab.haskell.org/ghc/ghc/issues/16620 and failed to bootstrap.

When cloning this repository and running the following command:

% nix build "(with import <nixpkgs> (import ./.); haskell-nix.nix-tools)" --keep-failed

It failed while building bindist-version and raised the following error:

% nix build "(with import <nixpkgs> (import ./.); haskell-nix.nix-tools)" --keep-failed
warning: dumping very large path (> 256 MiB); this may run out of memory
note: keeping build directory '/private/var/folders/qy/4m5dss6j6vg51dspg41ty2mw0000gn/T/nix-build-bindist-version.drv-9'
builder for '/nix/store/nliwa4kqxdswrzd9923v6z2n7mbvvc3p-bindist-version.drv' failed with exit code 2; last 10 log lines:
  config.status: creating settings
  config.status: creating mk/config.mk
  config.status: creating mk/install.mk
  ****************************************************
  Configuration done, ready to 'make install'
  (see README and INSTALL files for more info.)
  ****************************************************
  configure: WARNING: cache variable fp_cv_gcc_version contains a newline
  building
  mk/config.mk:521: *** missing separator.  Stop.
[0 built (1 failed), 30.0 MiB DL]
error: build of '/nix/store/nliwa4kqxdswrzd9923v6z2n7mbvvc3p-bindist-version.drv' failed
(use '--show-trace' to show detailed location information)

I found that the version detection was not working:

% cd /private/var/folders/qy/4m5dss6j6vg51dspg41ty2mw0000gn/T/nix-build-bindist-version.drv-9
% source env-vars
% $CC -v 2>&1 | sed -n -e '1,/version /s/.*version [^0-9]*\([0-9.]*\).*/\1/p'
7.1.0
9.1

This is because my $CC is reporting the CUDA version along with the compiler version:

% $CC -v
clang version 7.1.0 (tags/RELEASE_710/final)
Target: x86_64-apple-darwin18.7.0
Thread model: posix
InstalledDir: /nix/store/j1gnbfpi25dw68d6idlxrxibycvirnbw-clang-7.1.0/bin
Found CUDA installation: /usr/local/cuda, version 9.1

This CUDA related problem is also reported https://gitlab.haskell.org/ghc/ghc/issues/14526 .

---

I am on:

% sw_vers
ProductName:	Mac OS X
ProductVersion:	10.14.6
BuildVersion:	18G1012
% nix --version
nix (Nix) 2.3.1

[kayhide]

I wrote this patch and solved the gcc version detection.

But I could not find out how to apply this patch properly in the process of nix build. Adding this patch to the ghc-patches on overlays/bootstrap.nix looked to work but did not.

Any suggestion to make it work?

Here is the branch of what I did: https://github.com/kayhide/haskell.nix/tree/patch-macos-gcc-version

[kayhide]

I made a progress.

The problem was actually triggered by a derivation which comes from old-ghc-nix. On that repo, I successfully applied a patch and built bindist-version on macOS. I am going to open a PR there.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.