shogun: disable parallel building

[xeji]

Motivation for this change

ZHF #36453

Despite a previous attempt to fix parallel building (see #32271), shogun still has sporadic build failures like this that I could not reproduce locally. Looking at the logs, this is likely due to an incorrect build sequence. Disable parallel building for now.

I based this PR on 18.03 because currently liblapack, a dependency of shogun, doesn't build on master. The change should be picked to master later.

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option build-use-sandbox in nix.conf on non-NixOS)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nox --run "nox-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Fits CONTRIBUTING.md.

---

[GrahamcOfBorg]

Failure on aarch64-linux (full log)

Attempted: shogun

Partial log (click to expand)

shrinking /nix/store/j7s7zkiplsx7jsnc3l3xfb98hrc71b87-ColPack-1.0.10/examples/Basic/color_graph_using_GraphColoringInterface
shrinking /nix/store/j7s7zkiplsx7jsnc3l3xfb98hrc71b87-ColPack-1.0.10/examples/Basic/color_bipartite_graph_using_BipartiteGraphPartialColoringInterface
shrinking /nix/store/j7s7zkiplsx7jsnc3l3xfb98hrc71b87-ColPack-1.0.10/examples/Basic/color_bipartite_graph_using_BipartiteGraphBicoloringInterface
shrinking /nix/store/j7s7zkiplsx7jsnc3l3xfb98hrc71b87-ColPack-1.0.10/lib/libColPack.so.0.0.0
strip is /nix/store/lvx1acn1ig1j2km8jds5x3ggh3f2wa8v-binutils-2.28.1/bin/strip
stripping (with command strip and flags -S) in /nix/store/j7s7zkiplsx7jsnc3l3xfb98hrc71b87-ColPack-1.0.10/lib
patching script interpreter paths in /nix/store/j7s7zkiplsx7jsnc3l3xfb98hrc71b87-ColPack-1.0.10
checking for references to /build in /nix/store/j7s7zkiplsx7jsnc3l3xfb98hrc71b87-ColPack-1.0.10...
cannot build derivation '/nix/store/lkcdciyr6rgkgrg4xvc31m3xi5w940nj-shogun-6.0.0.drv': 1 dependencies couldn't be built
�[31;1merror:�[0m build of '/nix/store/lkcdciyr6rgkgrg4xvc31m3xi5w940nj-shogun-6.0.0.drv' failed

[GrahamcOfBorg]

Success on x86_64-linux (full log)

Attempted: shogun

Partial log (click to expand)

shrinking /nix/store/wr1izv3qadkjqqvqrmcxvcmmkfj432l0-shogun-6.0.0/share/shogun/examples/libshogun/streaming_onlineliblinear_sparse
shrinking /nix/store/wr1izv3qadkjqqvqrmcxvcmmkfj432l0-shogun-6.0.0/share/shogun/examples/libshogun/streaming_stringfeatures
shrinking /nix/store/wr1izv3qadkjqqvqrmcxvcmmkfj432l0-shogun-6.0.0/share/shogun/examples/libshogun/streaming_vwfeatures
shrinking /nix/store/wr1izv3qadkjqqvqrmcxvcmmkfj432l0-shogun-6.0.0/share/shogun/examples/libshogun/transfer_multitaskleastsquaresregression
shrinking /nix/store/wr1izv3qadkjqqvqrmcxvcmmkfj432l0-shogun-6.0.0/share/shogun/examples/libshogun/transfer_multitasklogisticregression
shrinking /nix/store/wr1izv3qadkjqqvqrmcxvcmmkfj432l0-shogun-6.0.0/share/shogun/examples/libshogun/variational_approx_example
strip is /nix/store/b0zlxla7dmy1iwc3g459rjznx59797xy-binutils-2.28.1/bin/strip
stripping (with command strip and flags -S) in /nix/store/wr1izv3qadkjqqvqrmcxvcmmkfj432l0-shogun-6.0.0/lib
patching script interpreter paths in /nix/store/wr1izv3qadkjqqvqrmcxvcmmkfj432l0-shogun-6.0.0
checking for references to /build in /nix/store/wr1izv3qadkjqqvqrmcxvcmmkfj432l0-shogun-6.0.0...

[xeji]

aarch64 failure is unrelated (a dependency fails)