Pscycopg2-binary is normally used in Python development to avoid having to build psycopg2 from source.
In nixpkgs we always want ot build from source whenever possible, but it can still be useful to provide a psycopg2-binary package.
This "fake" package exists to satisfy a dependency on psycopg2-binary, but still use the build from psycopg2.
cc @misuzu https://github.com/nix-community/pyproject.nix/issues/143
every other format is deprecated, so to imply that people should be setting it is misleading
(`pyproject = true` should also go away eventually, but is the way until
then)
so that meta.description examples shown in the documentation
align with recommendations given in the "Meta attributes" section
in pkgs/README.md.
The changes were made with the following commands:
nix run nixpkgs#silver-searcher -- -l0 'description\s*=\s*"([Aa]n?|[Tt]he)\s' doc \
| xargs -0 nix run nixpkgs#gnused -- -i '' -Ee '/description/s/"([Aa]n?|[Tt]he)\s(.)/"\U\2/'
nix run nixpkgs#silver-searcher -- -l0 'description\s*=\s*".*\."' doc \
| xargs -0 nix run nixpkgs#gnused -- -i '' -Ee '/description/s/\."/"/'
* doc: autogenerate python interpreter table
This serves as a practical example on generating documentation by
inspection of the evaluated Nixpkgs tree.
Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>
In the past I was very active with Python packaging.
For several years now I was hardly around as maintainer,
so it does not make sense I am listed as a maintainer for
these makes. Looking back, I should have removed myself
as maintainer already much longer ago. Anyway, better late
than never.
It's been a fun ride, and I do intend to occasionally contribute
to Nixpkgs, but not in the same way it once was.
Broken since the switch to PyPA's build/installer in
6c85fff302.
The hook was always janky and maintainers appear to not want its current
implementation in-tree. No replacement is currently planned.
However, this leaves the path open for future replacements as a broken
hook will no longer be installed by default.
Cython is a Python compiler that emits native .so modules. By default, python derivations run tests in the wrong directory to see these modules and tests fail.
Issue #255262 documents the root cause and solution for this problem.
This PR adds a description of the problem and the most common solution to the test troubleshooting list.
Following [Best Practices](https://nix.dev/guides/best-practices#with-scopes),
`with` is a problematic language construction and should be avoided.
Usually it is employed like a "factorization": `[ X.A X.B X.C X.D ]` is written
`with X; [ A B C D ]`.
However, as shown in the link above, the syntatical rules of `with` are not so
intuitive, and this "distributive rule" is very selective, in the sense that
`with X; [ A B C D ]` is not equivalent to `[ X.A X.B X.C X.D ]`.
However, this factorization is still useful to "squeeze" some code, especially
in lists like `meta.maintainers`.
On the other hand, it becomes less justifiable in bigger scopes. This is
especially true in cases like `with lib;` in the top of expression and in sets
like `meta = with lib; { . . . }`.
That being said, this patch removes most of example code in the current
documentation.
The exceptions are, for now
- doc/functions/generators.section.md
- doc/languages-frameworks/coq.section.md
because, well, they are way more complicated, and I couldn't parse them
mentally - yet another reason why `with` should be avoided!
I was looking at
https://nixos.org/manual/nixpkgs/stable/#buildpythonpackage-parameters to
import a Python package and noticed that the link for the `hooks` in
`pyproject` option is broken due to a typo (used <kbd>0</kbd> instead of
<kbd>)</kbd>).
Signed-off-by: Mihai Maruseac <mihai.maruseac@gmail.com>
Much like the previous commit that adds dependencies &
optional-dependencies this aligns PEP-517 build systems with how they
are defined in PEP-518/PEP-621.
The naming `build-system` (singular) is aligned with upstream Python standards.
Since https://github.com/NixOS/nixpkgs/pull/161835 we've had the
concept of `passthru.optional-dependencies` for Python optional deps.
Having to explicitly put optional-dependencies in the passthru attrset
is a bit strange API-wise, even though it semantically makes sense.
This change unifies the handling of non-optional & optional Python
dependencies using the names established from PEP-621 (standardized pyproject.toml project metadata).
It is fine to use `with` on the inputs, since that increases the
overall readability of the package.
Removes `wheel` from `nativeBuildInputs`, since it is a result of
cargo culting from an earlier setuptools example, that was wrong, and
it is not required, since it is provided by setuptools itself.
The python-updates branch was formerly called python-unstable, but the
new branch name was never mentioned in the docs. This commit changes the
branch name in the docs to python-updates.
While the word 'simply' is usually added to encourage readers, it often has the
opposite effect and may even appear condescending, especially when the reader
runs into trouble trying to apply the suggestions from the documentation. It is
almost always an improvement to simply drop the word from the sentence.
(there are more possible improvements like this, we can apply those in separate
PRs)
Replaced with python3Packages except for the following to avoid misuse of pythonPackages
1. which we need for the explanation
2. which are replaced by python3Packages as variables
