build.hacks

`build.hacks.nixpkgsPrebuilt`

Use a package output built by Nixpkgs Python infrastructure.

Adapts a package by:

Stripping dependency propagation
Throwing away shell script wrapping
Filtering out sys.path dependency injection

This adaptation will of course break anything depending on other packages by $PATH, as these are injected by wrappers.

Example

nixpkgsPrebuilt {
  from = pkgs.python3Packages.torchWithoutCuda;
  prev = prev.torch;
}
=>
«derivation /nix/store/3864g3951bkbkq5nrld5yd8jxq7ss72y-torch-2.4.1.drv»

Type

nixpkgsPrebuilt :: AttrSet -> derivation

Arguments

from : Prebuilt package to transform output from

prev : Previous pyproject.nix package to take passthru from

`build.hacks.importCargoLock`

Build a Cargo (Rust) package using rustPlatform.importCargoLock to fetch Rust dependencies.

Uses IFD (import-from-derivation) on non-local packages.

Example

importCargoLock {
  prev = prev.cryptography;
  # Lock file relative to source root
  lockFile = "src/rust/Cargo.lock";
}
=>
«derivation /nix/store/g3z1zlmc0sqpd6d5ccfrx3c4w4nv5dzr-cryptography-43.0.0.drv»

Type

importCargoLock :: AttrSet -> derivation

Arguments

prev : Previous pyproject.nix package

importCargoLockArgs : Arguments passed directly to rustPlatform.importCargoLock function

cargoRoot : Path to Cargo source root

lockFile : Path to Cargo.lock (defaults to ${cargoRoot}/Cargo.lock)

doUnpack : Whether to unpack sources using an intermediate derivation

unpackDerivationArgs : Arguments passed directly to intermediate unpacker derivation (unused for path sources)

cargo : cargo derivation

rustc : rustc derivation

pkg-config : pkg-config derivation

`build.hacks.toNixpkgs`

Create a nixpkgs Python (buildPythonPackage) compatible package from a pyproject.nix build package.

Adapts a package by:

Activating a wheel output, if not already enabled
Create a package using generated wheel as input

Note: toNixpkgs is still experimental and subject to change.

Example

toNixpkgs {
  inherit pythonSet;
  packages = [ "requests" ];
}
=>
«lambda @ /nix/store/f05hjk9fh1m5py5j1ixzly07p4lla56x-source/build/hacks/default.nix:263:5»

Type

nixpkgsPrebuilt :: AttrSet -> derivation

Arguments

pythonSet : Pyproject.nix build Python package set

packages : List/predicate of overlay member packages

Keyboard shortcuts

Pyproject.nix