Return an S-expression representing the source code that produces PACKAGE when evaluated.

Given a Python PACKAGE built from pypi.org, return the name of the package on PyPI.

Given a specification SPEC, return the requirement name.

Given REQUIRES.TXT, a path to a Setuptools requires.txt file, return a list of lists of requirements.

The first list contains the required dependencies while the second the optional test dependencies. Note that currently, optional, non-test dependencies are omitted since these can be difficult or expensive to satisfy.

Try different project name substitution until the result is found in pypi-uri. Downcase is required for "uWSGI", and underscores are required for flake8-array-spacing.

Given METADATA, a Wheel metadata file, return a list of lists of requirements.

Refer to the documentation of PARSE-REQUIRES.TXT for a description of the returned value.

Find the metadata for NAME in the TeX Live database and return the associated Guix package, or #f on failure. Fetch metadata for a specific version whenever VERSION keyword is specified. Otherwise, grab package latest release. When DATABASE is provided, fetch metadata from there, ignoring VERSION.

Improve the package DESCRIPTION by turning a beginning sentence fragment into a proper sentence and by using two spaces between sentences, and wrap lines at LENGTH characters.

Factorize URI, a package tarball URI as a string, such that any occurrences of the string VERSION is replaced by the symbol 'version.

Try to download a given VERSION from a REPOSITORY url twice. Call ERROR-PROCEDURE if both attempts fail.

Save the contents of URL to FILE-NAME. Return #f on failure.

If APPEND-VERSION?/STRING is #t, append the package's major+minor version. If it is the symbol 'full, append the package's complete version. If APPEND-VERSION?/string is a string, append this string.