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7 commits

Author SHA1 Message Date
Daniël de Kok 1e2b6695cf pythonPackages.setuptoolsBuildHook: do not build in an isolated environment
When a PEP 517 project file is present, pip will not install
prerequisites in `site-packages`:

https://pip.pypa.io/en/stable/reference/pip/#pep-517-and-518-support

For the shell hook, this has the consequence that the generated
temporary directory that is added to PYTHONPATH does not contain
`site.py`. As a result, Python does not discover the Python
module. Thus when a user executes nix-shell in a project, they cannot
import the project's Python module.

This change adds the `--no-build-isolation` option to pip when
creating the editable environment, to correctly generate `site.py`,
even when a `pyproject.toml` is present.
2020-06-06 10:05:26 +02:00
John Ericson acd2d19484
Merge pull request #72347 from NixOS/bash-no-undef-vars
treewide: `set -u` everywhere
2019-11-04 19:52:33 -05:00
Dmitry Kalinkin 3466faf9d8 pythonPackages.setuptoolsBuildHook: fix debug message 2019-11-03 10:34:44 +01:00
John Ericson b7f4bda282 treewide: *Phase(s)? variables are optional
If these aren't defined, the stdenv defaults are used in the `*Phase`
case, or no extra phases are done, in the `*Phases` case.
2019-11-01 14:44:44 -04:00
John Ericson 2811b032d6 treewide: Make still dont* Variables are optional in most cases
Go beyond the obvious setup hooks now, with a bit of sed, with a skipped case:

 - cc-wrapper's `dontlink`, because it already is handled.

Also, in nix files escaping was manually added.

EMP
2019-11-01 14:44:44 -04:00
Sebastian Jordan 5505d2f036 python: Fix invalid pip call in setuptoolsShellHook 2019-09-22 09:55:13 +02:00
Frederik Rietdijk f7e28bf5d8 Split buildPythonPackage into setup hooks
This commit splits the `buildPythonPackage` into multiple setup hooks.

Generally, Python packages are built from source to wheels using `setuptools`.
The wheels are then installed with `pip`. Tests were often called with
`python setup.py test` but this is less common nowadays. Most projects
now use a different entry point for running tests, typically `pytest`
or `nosetests`.

Since the wheel format was introduced more tools were built to generate these,
e.g. `flit`. Since PEP 517 is provisionally accepted, defining a build-system
independent format (`pyproject.toml`), `pip` can now use that format to
execute the correct build-system.

In the past I've added support for PEP 517 (`pyproject`) to the Python
builder, resulting in a now rather large builder. Furthermore, it was not possible
to reuse components elsewhere. Therefore, the builder is now split into multiple
setup hooks.

The `setuptoolsCheckHook` is included now by default but in time it should
be removed from `buildPythonPackage` to make it easier to use another hook
(curently one has to pass in `dontUseSetuptoolsCheck`).
2019-09-06 15:18:45 +02:00