From 64c1e6a08ca3ae04ab52eaa51e567d92b94b42db Mon Sep 17 00:00:00 2001
From: Andrew Marshall <andrew@johnandrewmarshall.com>
Date: Tue, 30 Apr 2024 18:16:07 -0400
Subject: rPackages: Support building in parallel, do so by default

Some rPackages (e.g. duckdb) take a *very* long time to build without
any parallelization.
---
 pkgs/development/r-modules/generic-builder.nix | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'pkgs')

diff --git a/pkgs/development/r-modules/generic-builder.nix b/pkgs/development/r-modules/generic-builder.nix
index 5939a425aefa9..ecbd78c4057d7 100644
--- a/pkgs/development/r-modules/generic-builder.nix
+++ b/pkgs/development/r-modules/generic-builder.nix
@@ -10,8 +10,11 @@ stdenv.mkDerivation ({
   env.NIX_CFLAGS_COMPILE =
     lib.optionalString stdenv.isDarwin "-I${lib.getDev libcxx}/include/c++/v1";
 
+  enableParallelBuilding = true;
+
   configurePhase = ''
     runHook preConfigure
+    export MAKEFLAGS+="''${enableParallelBuilding:+-j$NIX_BUILD_CORES}"
     export R_LIBS_SITE="$R_LIBS_SITE''${R_LIBS_SITE:+:}$out/library"
     runHook postConfigure
   '';
-- 
cgit 1.4.1