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28 lines
1.2 KiB
Diff
28 lines
1.2 KiB
Diff
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diff --git a/setup.py b/setup.py
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index 0c8d8f16..565ef8ef 100644
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--- a/setup.py
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+++ b/setup.py
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@@ -172,21 +172,7 @@ class CMakeBuild(build_ext):
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subprocess.check_call(cmake_build, cwd=build_folder)
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def num_available_cpu_cores(ram_per_build_process_in_gb):
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- if 'TRAVIS' in os.environ and os.environ['TRAVIS']=='true':
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- # When building on travis-ci, just use 2 cores since travis-ci limits
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- # you to that regardless of what the hardware might suggest.
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- return 2
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- try:
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- mem_bytes = os.sysconf('SC_PAGE_SIZE') * os.sysconf('SC_PHYS_PAGES')
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- mem_gib = mem_bytes/(1024.**3)
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- num_cores = multiprocessing.cpu_count()
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- # make sure we have enough ram for each build process.
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- mem_cores = int(floor(mem_gib/float(ram_per_build_process_in_gb)+0.5));
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- # We are limited either by RAM or CPU cores. So pick the limiting amount
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- # and return that.
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- return max(min(num_cores, mem_cores), 1)
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- except ValueError:
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- return 2 # just assume 2 if we can't get the os to tell us the right answer.
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+ return os.getenv("NIX_BUILD_CORES", 1)
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from setuptools.command.test import test as TestCommand
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