async def write_package_expression(package: PyPIPackage):
reqs: ChosenPackageRequirements
reqs = ChosenPackageRequirements.from_package_requirements(
await evaluate_package_requirements(package),
version_chooser=version_chooser,
load_tests=version_chooser.should_load_tests(package.pypi_name),
)
sha256 = await get_path_hash(await package.source())
meta = await package.metadata()
try:
(pname, ext) = await get_pypi_data(package.download_url,
str(package.version), sha256)
except RuntimeError:
expr = build_nix_expression(package, reqs, meta, sha256)
else:
expr = build_nix_expression(package,
reqs,
meta,
sha256,
fetchPypi=(pname, ext))
expression_dir = (packages_path / f'{package.pypi_name}/')
expression_dir.mkdir(exist_ok=True)
expression_path = expression_dir / 'default.nix'
with expression_path.open('w') as fp:
fp.write(await nixfmt(expr))
expression_path = expression_path.relative_to(base_path)
overlays[package.attr] = expression_path
async def test_compiles(version_chooser):
await version_chooser.require(Requirement("sampleproject"))
result = build_nix_expression(version_chooser.package_for('sampleproject'),
NO_REQUIREMENTS,
NO_METADATA,
sha256='aaaaaa')
assert await is_valid_nix(result), "Invalid Nix expression"
async def test_build_sampleproject_expression(fetchPypi):
data = await load_nixpkgs_data(PINNED_NIXPKGS_ARGS)
nixpkgs = NixpkgsData(data)
pypi = PyPIData(PyPICache())
async def f(pkg):
return await evaluate_package_requirements(pkg, PINNED_NIXPKGS_ARGS)
c = VersionChooser(nixpkgs, pypi, f)
await c.require(Requirement('sampleproject==1.3.1'))
package: PyPIPackage = c.package_for('sampleproject') # type: ignore
sha256 = await get_path_hash(await package.source())
reqs = ChosenPackageRequirements(
build_requirements=[],
test_requirements=[],
runtime_requirements=[c.package_for('peppercorn')] # type: ignore
)
meta = await package.metadata()
expr = build_nix_expression(package, reqs, meta, sha256, fetchPypi)
print(expr)
wrapper_expr = f'(import <nixpkgs> {{}}).python3.pkgs.callPackage ({expr}) {{}}'
print(wrapper_expr)
result = await run_nix_build(wrapper_expr)
proc = await asyncio.create_subprocess_shell(
f'{result}/bin/sample', stdout=asyncio.subprocess.PIPE)
stdout, stderr = await proc.communicate()
assert (await proc.wait()) == 0
assert b'Call your main application code here' in stdout
async def test_duplicate_parameter(version_chooser):
await version_chooser.require(Requirement('pytest'))
await version_chooser.require(Requirement("sampleproject"))
pytest = version_chooser.package_for('pytest') # type: ignore
requirements = ChosenPackageRequirements(build_requirements=[pytest],
test_requirements=[pytest],
runtime_requirements=[pytest])
result = build_nix_expression(version_chooser.package_for('sampleproject'),
requirements,
NO_METADATA,
sha256='aaaaaa')
assert await is_valid_nix(result), "Invalid Nix expression"
async def test_metadata(version_chooser):
await version_chooser.require(Requirement("sampleproject"))
desc = "${builtins.abort builtins.currentSystem}"
result = build_nix_expression(version_chooser.package_for('sampleproject'),
NO_REQUIREMENTS,
sha256='aaaaaa',
metadata=PackageMetadata(
description=desc,
url=None,
license=None,
))
assert await nix_instantiate(result,
attr='meta.description',
**DEFAULT_ARGS) == desc
async def test_build_sampleproject_nixpkgs():
data = await load_nixpkgs_data(PINNED_NIXPKGS_ARGS)
nixpkgs = NixpkgsData(data)
pypi = PyPIData(PyPICache())
async def f(pkg):
return await evaluate_package_requirements(pkg, PINNED_NIXPKGS_ARGS)
c = VersionChooser(nixpkgs, pypi, f)
await c.require(Requirement('pytest'))
await c.require(Requirement('sampleproject==1.3.1'))
package: PyPIPackage = c.package_for('sampleproject') # type: ignore
sha256 = await get_path_hash(await package.source())
reqs = ChosenPackageRequirements(
build_requirements=[],
test_requirements=[c.package_for('pytest')], # type: ignore
runtime_requirements=[c.package_for('peppercorn')] # type: ignore
)
package.version = Version('1.2.3')
meta = await package.metadata()
assert package.version == Version('1.3.1')
sampleproject_expr = build_nix_expression(package, reqs, meta, sha256)
with tempfile.NamedTemporaryFile(suffix='.nix') as fp:
fp.write(sampleproject_expr.encode())
fp.flush()
nixpkgs_expr = build_overlayed_nixpkgs(
{'sampleproject': Path(fp.name)})
print(nixpkgs_expr)
wrapper_expr = f"""(({nixpkgs_expr}) {{}}).python3.pkgs.sampleproject"""
result = await run_nix_build(wrapper_expr)
assert 'default.nix' not in nixpkgs_expr
proc = await asyncio.create_subprocess_shell(
f'{result}/bin/sample', stdout=asyncio.subprocess.PIPE)
stdout, stderr = await proc.communicate()
assert (await proc.wait()) == 0
assert b'Call your main application code here' in stdout
async def test_build_textwrap3_expression():
data = await load_nixpkgs_data(PINNED_NIXPKGS_ARGS)
nixpkgs = NixpkgsData(data)
pypi = PyPIData(PyPICache())
async def f(pkg):
return await evaluate_package_requirements(pkg, PINNED_NIXPKGS_ARGS)
c = VersionChooser(nixpkgs, pypi, f)
await c.require(Requirement('textwrap3==0.9.1'))
package: PyPIPackage = c.package_for('textwrap3') # type: ignore
sha256 = await get_path_hash(await package.source())
reqs = ChosenPackageRequirements(
build_requirements=[],
test_requirements=[],
runtime_requirements=[],
)
meta = await package.metadata()
expr = build_nix_expression(package, reqs, meta, sha256,
('textwrap3', 'zip'))
print(expr)
wrapper_expr = f'(import <nixpkgs> {{}}).python3.pkgs.callPackage ({expr}) {{}}'
print(wrapper_expr)
result = await run_nix_build(wrapper_expr)