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python: reproducible builds

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Achieve reproducible builds of the interpreter. Note this meant
disabling optimizations again.
This commit is contained in:
Frederik Rietdijk 2020-12-30 14:49:10 +01:00 • committed by Frederik Rietdijk
parent 1adc69d4aa
commit 9d03ff5222
4 changed files with 71 additions and 21 deletions
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17
doc/languages-frameworks/python.section.md
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@ -788,6 +788,23 @@ Each interpreter has the following attributes:
- `executable`. Name of the interpreter executable, e.g. `python3.8`.
- `pkgs`. Set of Python packages for that specific interpreter. The package set can be modified by overriding the interpreter and passing `packageOverrides`.
### Optimizations
The Python interpreters are by default not build with optimizations enabled, because
the builds are in that case not reproducible. To enable optimizations, override the
interpreter of interest, e.g using
```
let
pkgs = import ./. {};
mypython = pkgs.python3.override {
enableOptimizations = true;
reproducibleBuild = false;
self = mypython;
};
in mypython
```
### Building packages and applications
Python libraries and applications that use `setuptools` or