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devshells: only enable pch for clang

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clangd seems to break if GCC is using precompiled headers for C++'s
standard library, so this sets -Denable-pch-std=${stdenv.cc.isClang}

Fixes #374.

Change-Id: Ic4be41ebe7576ebcb9c208275596f953c2003109
This commit is contained in:
Qyriad 2024-06-06 12:48:13 -06:00
parent 06e65e537b
commit 766e718f67
1 changed files with 8 additions and 3 deletions
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package.nix
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@ -424,9 +424,14 @@ stdenv.mkDerivation (finalAttrs: {
# For Meson to find Boost. # For Meson to find Boost.
env = finalAttrs.env; env = finalAttrs.env;
mesonFlags =
# I guess this is necessary because mesonFlags to mkDerivation doesn't propagate in inputsFrom, # I guess this is necessary because mesonFlags to mkDerivation doesn't propagate in inputsFrom,
# which only propagates stuff set in hooks? idk. # which only propagates stuff set in hooks? idk.
inherit (finalAttrs) mesonFlags; finalAttrs.mesonFlags
# Clangd breaks when GCC is using precompiled headers, so for the devshell specifically
# we make precompiled C++ stdlib conditional on using Clang.
# https://git.lix.systems/lix-project/lix/issues/374
++ [ (lib.mesonBool "enable-pch-std" stdenv.cc.isClang) ];
packages = packages =
lib.optional (stdenv.cc.isClang && hostPlatform == buildPlatform) clang-tools_llvm lib.optional (stdenv.cc.isClang && hostPlatform == buildPlatform) clang-tools_llvm