# NuPIC 0.7.0 macOS 10.10.5 installation problems

**URL:** <https://discourse.numenta.org/t/nupic-0-7-0-macos-10-10-5-installation-problems/2463>\
**Category:** NuPIC\
**Created:** [June 9, 2017, 12:55am UTC](https://discourse.numenta.org/t/nupic-0-7-0-macos-10-10-5-installation-problems/2463 "2017-06-09T00:55:54Z")\
**Posts on this page:** 1\
**Showing post:** 35

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**Author:** ![jacobeverist](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.numenta.org/jacobeverist/32/6736_2.png) [@jacobeverist](https://discourse.numenta.org/u/jacobeverist)\
**Post date:** [August 3, 2017, 9:23pm UTC](https://discourse.numenta.org/t/nupic-0-7-0-macos-10-10-5-installation-problems/2463/35 "2017-08-03T21:23:16Z")

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@jbmaxwell @rhyolight

I was able to fix my problem with the recommendation from [https://github.com/capnproto/pycapnp/issues/155](https://github.com/capnproto/pycapnp/issues/155)

Use the following command-line:

`CFLAGS="-mmacosx-version-min=10.7 -std=c++11 -stdlib=libc++" pip install pycapnp`

This will install the latest version of pycapnp which is 0.6.1 and unfortunately the wrong version for nupic’s dependency.

If I try to install the version of pycapnp that nupic wants:  
`CFLAGS="-mmacosx-version-min=10.7 -std=c++11 -stdlib=libc++" pip install pycapnp==0.5.12`

The install process fails.

I fixed this by downloading the nupic release source and then editing the [setup.py](http://setup.py) to use the 0.6.1 pycapnp instead of the 0.5.12 version. It appears to work correctly.

So the procedure is:

1. Install pycapnp==0.6.1 separately using the above CFLAGS prefixes.

2. download nupic release source

3. edit [setup.py](http://setup.py) to change pycapnp version to 0.6.1

4. run `pip install .` in nupic source directory and it will use the installed pycapnp with no problem.

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