(
    to_install,  # type: List[InstallRequirement]
    install_options,  # type: List[str]
    global_options=(),  # type: Sequence[str]
    *args,  # type: Any
    **kwargs  # type: Any
)
return to_install
Install everything in the given list.

    (to be called after having downloaded and unpacked the packages)
Install everything in the given list.
Install everything in the given list .
def install_given_reqs(
    to_install,  # type: List[InstallRequirement]
    install_options,  # type: List[str]
    global_options=(),  # type: Sequence[str]
    *args,  # type: Any
    **kwargs  # type: Any
):
    # type: (...) -> List[InstallRequirement]
    """
    Install everything in the given list.

    (to be called after having downloaded and unpacked the packages)
    """

    if to_install:
        logger.info(
            'Installing collected packages: %s',
            ', '.join([req.name for req in to_install]),
        )

    with indent_log():
        for requirement in to_install:
            if requirement.conflicts_with:
                logger.info(
                    'Found existing installation: %s',
                    requirement.conflicts_with,
                )
                with indent_log():
                    uninstalled_pathset = requirement.uninstall(
                        auto_confirm=True
                    )
            try:
                requirement.install(
                    install_options,
                    global_options,
                    *args,
                    **kwargs
                )
            except Exception:
                should_rollback = (
                    requirement.conflicts_with and
                    not requirement.install_succeeded
                )
                # if install did not succeed, rollback previous uninstall
                if should_rollback:
                    uninstalled_pathset.rollback()
                raise
            else:
                should_commit = (
                    requirement.conflicts_with and
                    requirement.install_succeeded
                )
                if should_commit:
                    uninstalled_pathset.commit()
            requirement.remove_temporary_source()

    return to_install
def install_given_reqs ( to_install , # type: List[InstallRequirement] install_options , # type: List[str] global_options = ( ) , # type: Sequence[str] * args , # type: Any * * kwargs # type: Any ) : # type: (...) -> List[InstallRequirement] if to_install : logger . info ( 'Installing collected packages: %s' , ', ' . join ( [ req . name for req in to_install ] ) , ) with indent_log ( ) : for requirement in to_install : if requirement . conflicts_with : logger . info ( 'Found existing installation: %s' , requirement . conflicts_with , ) with indent_log ( ) : uninstalled_pathset = requirement . uninstall ( auto_confirm = True ) try : requirement . install ( install_options , global_options , * args , * * kwargs ) except Exception : should_rollback = ( requirement . conflicts_with and not requirement . install_succeeded ) # if install did not succeed, rollback previous uninstall if should_rollback : uninstalled_pathset . rollback ( ) raise else : should_commit = ( requirement . conflicts_with and requirement . install_succeeded ) if should_commit : uninstalled_pathset . commit ( ) requirement . remove_temporary_source ( ) return to_install