From d096c8452707297e99779ec57425451e31282158 Mon Sep 17 00:00:00 2001
From: joneshf <jones3.hardy@gmail.com>
Date: Sun, 26 Aug 2018 10:27:53 -0700
Subject: [PATCH] Limit the number of simultaneous jobs

We might be trying to overdo it with the number of CPU cores available.
If we limit the jobs, it might speed up the build.
---
 .circleci/config.yml | 2 ++
 Makefile             | 3 ++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 7d6818e..29d5893 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -13,6 +13,8 @@ jobs:
       - run:
           name: Compile
           command: nix-shell --run 'make sdist test -j2'
+          environment:
+            CABAL_BUILD_FLAGS: --jobs=2
       - save_cache:
           key: v2-nix-{{ checksum "package.yaml" }}
           name: Caching nix
diff --git a/Makefile b/Makefile
index 47405ad..3912826 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,6 @@
 CABAL ?= cabal
 CABAL_FLAGS ?=
+CABAL_BUILD_FLAGS ?=
 DIST ?= dist
 GHCID ?= ghcid
 GHCID_FLAGS ?= --ghc-options=-fno-code
@@ -22,7 +23,7 @@ $(CONFIGURE): $(CABAL_FILE)
 
 .PHONY: build
 build $(DOC_TEST): $(CONFIGURE) default.nix
-	$(CABAL) $(CABAL_FLAGS) build
+	$(CABAL) $(CABAL_FLAGS) build $(CABAL_BUILD_FLAGS)
 
 .PHONY: check
 check: $(CABAL_FILE)