https://github.com/tanin47/bazel-pex-pip

https://github.com/tanin47/bazel-pex-pip

Last synced: about 2 months ago
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• Host: GitHub
• URL: https://github.com/tanin47/bazel-pex-pip
• Owner: tanin47
• Created: 2017-04-13T03:17:00.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2017-04-14T04:37:37.000Z (over 7 years ago)
• Last Synced: 2024-06-27T14:40:49.152Z (3 months ago)
• Language: Python
• Size: 9.77 KB
• Stars: 11
• Watchers: 4
• Forks: 3
• Open Issues: 2
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

• awesome-bazel - Python pip

README

        
Example of Bazel with pex and pip

==================================

This repo is a working example showing how to use [Bazel](https://bazel.build/)

with [pex](https://github.com/pantsbuild/pex) and

[pip](https://github.com/pypa/pip).

This repo is meant to be educational. Therefore, please read the code.

The example shows:

* pulls dependencies using pip

* builds a single binary with pex

* reads a resource file

Usage

-------

1. `bazel build main.pex`

2. `./bazel-bin/main.pex`

The output:

```

Current file's path: /usr/local/google/home/tanin/.pex/code/e7c476458b50c0339f6e515b84111b4dd9dee723/test.py

appdirs' path: /usr/local/google/home/tanin/.pex/install/appdirs-1.4.3-py2.py3-none-any.whl.88ca3acdb0294d36138be8eb8d73eb234d0cc1d3/appdirs-1.4.3-py2.py3-none-any.whl/appdirs.pyc

Test.json's content: TEST

Finished.

```

Notice that `appdirs` comes from within `.pex`.

Design Decision

-----------------

### Why do we choose pex over [subpar](https://github.com/google/subpar)?

Subpar doesn't support extracting resource files from the archive. If we have a

more complex use case (e.g. executing a bash script), we can't use subpar.

Pex, on another hand, can set `zip_safe=False` which extracts the archive before

executing the python code.

Special Thanks

----------------

* [The snippet](https://github.com/bazelbuild/bazel/issues/699#issuecomment-262091510) on pip integration from @trivigy

* [The pex integration](https://github.com/benley/bazel_rules_pex) from @benley