507 lines
16 KiB
Python
507 lines
16 KiB
Python
|
"""Backing implementation for InstallRequirement's various constructors
|
||
|
|
|
||
|
|
The idea here is that these formed a major chunk of InstallRequirement's size
|
||
|
|
so, moving them and support code dedicated to them outside of that class
|
||
|
|
helps creates for better understandability for the rest of the code.
|
||
|
|
|
||
|
|
These are meant to be used elsewhere within pip to create instances of
|
||
|
|
InstallRequirement.
|
||
|
|
"""
|
||
|
|
|
||
|
|
import logging
|
||
|
|
import os
|
||
|
|
import re
|
||
|
|
from typing import Dict, List, Optional, Set, Tuple, Union
|
||
|
|
|
||
|
|
from pip._vendor.packaging.markers import Marker
|
||
|
|
from pip._vendor.packaging.requirements import InvalidRequirement, Requirement
|
||
|
|
from pip._vendor.packaging.specifiers import Specifier
|
||
|
|
|
||
|
|
from pip._internal.exceptions import InstallationError
|
||
|
|
from pip._internal.models.index import PyPI, TestPyPI
|
||
|
|
from pip._internal.models.link import Link
|
||
|
|
from pip._internal.models.wheel import Wheel
|
||
|
|
from pip._internal.req.req_file import ParsedRequirement
|
||
|
|
from pip._internal.req.req_install import InstallRequirement
|
||
|
|
from pip._internal.utils.filetypes import is_archive_file
|
||
|
|
from pip._internal.utils.misc import is_installable_dir
|
||
|
|
from pip._internal.utils.packaging import get_requirement
|
||
|
|
from pip._internal.utils.urls import path_to_url
|
||
|
|
from pip._internal.vcs import is_url, vcs
|
||
|
|
|
||
|
|
__all__ = [
|
||
|
|
"install_req_from_editable",
|
||
|
|
"install_req_from_line",
|
||
|
|
"parse_editable",
|
||
|
|
]
|
||
|
|
|
||
|
|
logger = logging.getLogger(__name__)
|
||
|
|
operators = Specifier._operators.keys()
|
||
|
|
|
||
|
|
|
||
|
|
def _strip_extras(path: str) -> Tuple[str, Optional[str]]:
|
||
|
|
m = re.match(r"^(.+)(\[[^\]]+\])$", path)
|
||
|
|
extras = None
|
||
|
|
if m:
|
||
|
|
path_no_extras = m.group(1)
|
||
|
|
extras = m.group(2)
|
||
|
|
else:
|
||
|
|
path_no_extras = path
|
||
|
|
|
||
|
|
return path_no_extras, extras
|
||
|
|
|
||
|
|
|
||
|
|
def convert_extras(extras: Optional[str]) -> Set[str]:
|
||
|
|
if not extras:
|
||
|
|
return set()
|
||
|
|
return get_requirement("placeholder" + extras.lower()).extras
|
||
|
|
|
||
|
|
|
||
|
|
def parse_editable(editable_req: str) -> Tuple[Optional[str], str, Set[str]]:
|
||
|
|
"""Parses an editable requirement into:
|
||
|
|
- a requirement name
|
||
|
|
- an URL
|
||
|
|
- extras
|
||
|
|
- editable options
|
||
|
|
Accepted requirements:
|
||
|
|
svn+http://blahblah@rev#egg=Foobar[baz]&subdirectory=version_subdir
|
||
|
|
.[some_extra]
|
||
|
|
"""
|
||
|
|
|
||
|
|
url = editable_req
|
||
|
|
|
||
|
|
# If a file path is specified with extras, strip off the extras.
|
||
|
|
url_no_extras, extras = _strip_extras(url)
|
||
|
|
|
||
|
|
if os.path.isdir(url_no_extras):
|
||
|
|
# Treating it as code that has already been checked out
|
||
|
|
url_no_extras = path_to_url(url_no_extras)
|
||
|
|
|
||
|
|
if url_no_extras.lower().startswith("file:"):
|
||
|
|
package_name = Link(url_no_extras).egg_fragment
|
||
|
|
if extras:
|
||
|
|
return (
|
||
|
|
package_name,
|
||
|
|
url_no_extras,
|
||
|
|
get_requirement("placeholder" + extras.lower()).extras,
|
||
|
|
)
|
||
|
|
else:
|
||
|
|
return package_name, url_no_extras, set()
|
||
|
|
|
||
|
|
for version_control in vcs:
|
||
|
|
if url.lower().startswith(f"{version_control}:"):
|
||
|
|
url = f"{version_control}+{url}"
|
||
|
|
break
|
||
|
|
|
||
|
|
link = Link(url)
|
||
|
|
|
||
|
|
if not link.is_vcs:
|
||
|
|
backends = ", ".join(vcs.all_schemes)
|
||
|
|
raise InstallationError(
|
||
|
|
f"{editable_req} is not a valid editable requirement. "
|
||
|
|
f"It should either be a path to a local project or a VCS URL "
|
||
|
|
f"(beginning with {backends})."
|
||
|
|
)
|
||
|
|
|
||
|
|
package_name = link.egg_fragment
|
||
|
|
if not package_name:
|
||
|
|
raise InstallationError(
|
||
|
|
"Could not detect requirement name for '{}', please specify one "
|
||
|
|
"with #egg=your_package_name".format(editable_req)
|
||
|
|
)
|
||
|
|
return package_name, url, set()
|
||
|
|
|
||
|
|
|
||
|
|
def check_first_requirement_in_file(filename: str) -> None:
|
||
|
|
"""Check if file is parsable as a requirements file.
|
||
|
|
|
||
|
|
This is heavily based on ``pkg_resources.parse_requirements``, but
|
||
|
|
simplified to just check the first meaningful line.
|
||
|
|
|
||
|
|
:raises InvalidRequirement: If the first meaningful line cannot be parsed
|
||
|
|
as an requirement.
|
||
|
|
"""
|
||
|
|
with open(filename, encoding="utf-8", errors="ignore") as f:
|
||
|
|
# Create a steppable iterator, so we can handle \-continuations.
|
||
|
|
lines = (
|
||
|
|
line
|
||
|
|
for line in (line.strip() for line in f)
|
||
|
|
if line and not line.startswith("#") # Skip blank lines/comments.
|
||
|
|
)
|
||
|
|
|
||
|
|
for line in lines:
|
||
|
|
# Drop comments -- a hash without a space may be in a URL.
|
||
|
|
if " #" in line:
|
||
|
|
line = line[: line.find(" #")]
|
||
|
|
# If there is a line continuation, drop it, and append the next line.
|
||
|
|
if line.endswith("\\"):
|
||
|
|
line = line[:-2].strip() + next(lines, "")
|
||
|
|
Requirement(line)
|
||
|
|
return
|
||
|
|
|
||
|
|
|
||
|
|
def deduce_helpful_msg(req: str) -> str:
|
||
|
|
"""Returns helpful msg in case requirements file does not exist,
|
||
|
|
or cannot be parsed.
|
||
|
|
|
||
|
|
:params req: Requirements file path
|
||
|
|
"""
|
||
|
|
if not os.path.exists(req):
|
||
|
|
return f" File '{req}' does not exist."
|
||
|
|
msg = " The path does exist. "
|
||
|
|
# Try to parse and check if it is a requirements file.
|
||
|
|
try:
|
||
|
|
check_first_requirement_in_file(req)
|
||
|
|
except InvalidRequirement:
|
||
|
|
logger.debug("Cannot parse '%s' as requirements file", req)
|
||
|
|
else:
|
||
|
|
msg += (
|
||
|
|
f"The argument you provided "
|
||
|
|
f"({req}) appears to be a"
|
||
|
|
f" requirements file. If that is the"
|
||
|
|
f" case, use the '-r' flag to install"
|
||
|
|
f" the packages specified within it."
|
||
|
|
)
|
||
|
|
return msg
|
||
|
|
|
||
|
|
|
||
|
|
class RequirementParts:
|
||
|
|
def __init__(
|
||
|
|
self,
|
||
|
|
requirement: Optional[Requirement],
|
||
|
|
link: Optional[Link],
|
||
|
|
markers: Optional[Marker],
|
||
|
|
extras: Set[str],
|
||
|
|
):
|
||
|
|
self.requirement = requirement
|
||
|
|
self.link = link
|
||
|
|
self.markers = markers
|
||
|
|
self.extras = extras
|
||
|
|
|
||
|
|
|
||
|
|
def parse_req_from_editable(editable_req: str) -> RequirementParts:
|
||
|
|
name, url, extras_override = parse_editable(editable_req)
|
||
|
|
|
||
|
|
if name is not None:
|
||
|
|
try:
|
||
|
|
req: Optional[Requirement] = Requirement(name)
|
||
|
|
except InvalidRequirement:
|
||
|
|
raise InstallationError(f"Invalid requirement: '{name}'")
|
||
|
|
else:
|
||
|
|
req = None
|
||
|
|
|
||
|
|
link = Link(url)
|
||
|
|
|
||
|
|
return RequirementParts(req, link, None, extras_override)
|
||
|
|
|
||
|
|
|
||
|
|
# ---- The actual constructors follow ----
|
||
|
|
|
||
|
|
|
||
|
|
def install_req_from_editable(
|
||
|
|
editable_req: str,
|
||
|
|
comes_from: Optional[Union[InstallRequirement, str]] = None,
|
||
|
|
*,
|
||
|
|
use_pep517: Optional[bool] = None,
|
||
|
|
isolated: bool = False,
|
||
|
|
global_options: Optional[List[str]] = None,
|
||
|
|
hash_options: Optional[Dict[str, List[str]]] = None,
|
||
|
|
constraint: bool = False,
|
||
|
|
user_supplied: bool = False,
|
||
|
|
permit_editable_wheels: bool = False,
|
||
|
|
config_settings: Optional[Dict[str, Union[str, List[str]]]] = None,
|
||
|
|
) -> InstallRequirement:
|
||
|
|
parts = parse_req_from_editable(editable_req)
|
||
|
|
|
||
|
|
return InstallRequirement(
|
||
|
|
parts.requirement,
|
||
|
|
comes_from=comes_from,
|
||
|
|
user_supplied=user_supplied,
|
||
|
|
editable=True,
|
||
|
|
permit_editable_wheels=permit_editable_wheels,
|
||
|
|
link=parts.link,
|
||
|
|
constraint=constraint,
|
||
|
|
use_pep517=use_pep517,
|
||
|
|
isolated=isolated,
|
||
|
|
global_options=global_options,
|
||
|
|
hash_options=hash_options,
|
||
|
|
config_settings=config_settings,
|
||
|
|
extras=parts.extras,
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
def _looks_like_path(name: str) -> bool:
|
||
|
|
"""Checks whether the string "looks like" a path on the filesystem.
|
||
|
|
|
||
|
|
This does not check whether the target actually exists, only judge from the
|
||
|
|
appearance.
|
||
|
|
|
||
|
|
Returns true if any of the following conditions is true:
|
||
|
|
* a path separator is found (either os.path.sep or os.path.altsep);
|
||
|
|
* a dot is found (which represents the current directory).
|
||
|
|
"""
|
||
|
|
if os.path.sep in name:
|
||
|
|
return True
|
||
|
|
if os.path.altsep is not None and os.path.altsep in name:
|
||
|
|
return True
|
||
|
|
if name.startswith("."):
|
||
|
|
return True
|
||
|
|
return False
|
||
|
|
|
||
|
|
|
||
|
|
def _get_url_from_path(path: str, name: str) -> Optional[str]:
|
||
|
|
"""
|
||
|
|
First, it checks whether a provided path is an installable directory. If it
|
||
|
|
is, returns the path.
|
||
|
|
|
||
|
|
If false, check if the path is an archive file (such as a .whl).
|
||
|
|
The function checks if the path is a file. If false, if the path has
|
||
|
|
an @, it will treat it as a PEP 440 URL requirement and return the path.
|
||
|
|
"""
|
||
|
|
if _looks_like_path(name) and os.path.isdir(path):
|
||
|
|
if is_installable_dir(path):
|
||
|
|
return path_to_url(path)
|
||
|
|
# TODO: The is_installable_dir test here might not be necessary
|
||
|
|
# now that it is done in load_pyproject_toml too.
|
||
|
|
raise InstallationError(
|
||
|
|
f"Directory {name!r} is not installable. Neither 'setup.py' "
|
||
|
|
"nor 'pyproject.toml' found."
|
||
|
|
)
|
||
|
|
if not is_archive_file(path):
|
||
|
|
return None
|
||
|
|
if os.path.isfile(path):
|
||
|
|
return path_to_url(path)
|
||
|
|
urlreq_parts = name.split("@", 1)
|
||
|
|
if len(urlreq_parts) >= 2 and not _looks_like_path(urlreq_parts[0]):
|
||
|
|
# If the path contains '@' and the part before it does not look
|
||
|
|
# like a path, try to treat it as a PEP 440 URL req instead.
|
||
|
|
return None
|
||
|
|
logger.warning(
|
||
|
|
"Requirement %r looks like a filename, but the file does not exist",
|
||
|
|
name,
|
||
|
|
)
|
||
|
|
return path_to_url(path)
|
||
|
|
|
||
|
|
|
||
|
|
def parse_req_from_line(name: str, line_source: Optional[str]) -> RequirementParts:
|
||
|
|
if is_url(name):
|
||
|
|
marker_sep = "; "
|
||
|
|
else:
|
||
|
|
marker_sep = ";"
|
||
|
|
if marker_sep in name:
|
||
|
|
name, markers_as_string = name.split(marker_sep, 1)
|
||
|
|
markers_as_string = markers_as_string.strip()
|
||
|
|
if not markers_as_string:
|
||
|
|
markers = None
|
||
|
|
else:
|
||
|
|
markers = Marker(markers_as_string)
|
||
|
|
else:
|
||
|
|
markers = None
|
||
|
|
name = name.strip()
|
||
|
|
req_as_string = None
|
||
|
|
path = os.path.normpath(os.path.abspath(name))
|
||
|
|
link = None
|
||
|
|
extras_as_string = None
|
||
|
|
|
||
|
|
if is_url(name):
|
||
|
|
link = Link(name)
|
||
|
|
else:
|
||
|
|
p, extras_as_string = _strip_extras(path)
|
||
|
|
url = _get_url_from_path(p, name)
|
||
|
|
if url is not None:
|
||
|
|
link = Link(url)
|
||
|
|
|
||
|
|
# it's a local file, dir, or url
|
||
|
|
if link:
|
||
|
|
# Handle relative file URLs
|
||
|
|
if link.scheme == "file" and re.search(r"\.\./", link.url):
|
||
|
|
link = Link(path_to_url(os.path.normpath(os.path.abspath(link.path))))
|
||
|
|
# wheel file
|
||
|
|
if link.is_wheel:
|
||
|
|
wheel = Wheel(link.filename) # can raise InvalidWheelFilename
|
||
|
|
req_as_string = f"{wheel.name}=={wheel.version}"
|
||
|
|
else:
|
||
|
|
# set the req to the egg fragment. when it's not there, this
|
||
|
|
# will become an 'unnamed' requirement
|
||
|
|
req_as_string = link.egg_fragment
|
||
|
|
|
||
|
|
# a requirement specifier
|
||
|
|
else:
|
||
|
|
req_as_string = name
|
||
|
|
|
||
|
|
extras = convert_extras(extras_as_string)
|
||
|
|
|
||
|
|
def with_source(text: str) -> str:
|
||
|
|
if not line_source:
|
||
|
|
return text
|
||
|
|
return f"{text} (from {line_source})"
|
||
|
|
|
||
|
|
def _parse_req_string(req_as_string: str) -> Requirement:
|
||
|
|
try:
|
||
|
|
req = get_requirement(req_as_string)
|
||
|
|
except InvalidRequirement:
|
||
|
|
if os.path.sep in req_as_string:
|
||
|
|
add_msg = "It looks like a path."
|
||
|
|
add_msg += deduce_helpful_msg(req_as_string)
|
||
|
|
elif "=" in req_as_string and not any(
|
||
|
|
op in req_as_string for op in operators
|
||
|
|
):
|
||
|
|
add_msg = "= is not a valid operator. Did you mean == ?"
|
||
|
|
else:
|
||
|
|
add_msg = ""
|
||
|
|
msg = with_source(f"Invalid requirement: {req_as_string!r}")
|
||
|
|
if add_msg:
|
||
|
|
msg += f"\nHint: {add_msg}"
|
||
|
|
raise InstallationError(msg)
|
||
|
|
else:
|
||
|
|
# Deprecate extras after specifiers: "name>=1.0[extras]"
|
||
|
|
# This currently works by accident because _strip_extras() parses
|
||
|
|
# any extras in the end of the string and those are saved in
|
||
|
|
# RequirementParts
|
||
|
|
for spec in req.specifier:
|
||
|
|
spec_str = str(spec)
|
||
|
|
if spec_str.endswith("]"):
|
||
|
|
msg = f"Extras after version '{spec_str}'."
|
||
|
|
raise InstallationError(msg)
|
||
|
|
return req
|
||
|
|
|
||
|
|
if req_as_string is not None:
|
||
|
|
req: Optional[Requirement] = _parse_req_string(req_as_string)
|
||
|
|
else:
|
||
|
|
req = None
|
||
|
|
|
||
|
|
return RequirementParts(req, link, markers, extras)
|
||
|
|
|
||
|
|
|
||
|
|
def install_req_from_line(
|
||
|
|
name: str,
|
||
|
|
comes_from: Optional[Union[str, InstallRequirement]] = None,
|
||
|
|
*,
|
||
|
|
use_pep517: Optional[bool] = None,
|
||
|
|
isolated: bool = False,
|
||
|
|
global_options: Optional[List[str]] = None,
|
||
|
|
hash_options: Optional[Dict[str, List[str]]] = None,
|
||
|
|
constraint: bool = False,
|
||
|
|
line_source: Optional[str] = None,
|
||
|
|
user_supplied: bool = False,
|
||
|
|
config_settings: Optional[Dict[str, Union[str, List[str]]]] = None,
|
||
|
|
) -> InstallRequirement:
|
||
|
|
"""Creates an InstallRequirement from a name, which might be a
|
||
|
|
requirement, directory containing 'setup.py', filename, or URL.
|
||
|
|
|
||
|
|
:param line_source: An optional string describing where the line is from,
|
||
|
|
for logging purposes in case of an error.
|
||
|
|
"""
|
||
|
|
parts = parse_req_from_line(name, line_source)
|
||
|
|
|
||
|
|
return InstallRequirement(
|
||
|
|
parts.requirement,
|
||
|
|
comes_from,
|
||
|
|
link=parts.link,
|
||
|
|
markers=parts.markers,
|
||
|
|
use_pep517=use_pep517,
|
||
|
|
isolated=isolated,
|
||
|
|
global_options=global_options,
|
||
|
|
hash_options=hash_options,
|
||
|
|
config_settings=config_settings,
|
||
|
|
constraint=constraint,
|
||
|
|
extras=parts.extras,
|
||
|
|
user_supplied=user_supplied,
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
def install_req_from_req_string(
|
||
|
|
req_string: str,
|
||
|
|
comes_from: Optional[InstallRequirement] = None,
|
||
|
|
isolated: bool = False,
|
||
|
|
use_pep517: Optional[bool] = None,
|
||
|
|
user_supplied: bool = False,
|
||
|
|
) -> InstallRequirement:
|
||
|
|
try:
|
||
|
|
req = get_requirement(req_string)
|
||
|
|
except InvalidRequirement:
|
||
|
|
raise InstallationError(f"Invalid requirement: '{req_string}'")
|
||
|
|
|
||
|
|
domains_not_allowed = [
|
||
|
|
PyPI.file_storage_domain,
|
||
|
|
TestPyPI.file_storage_domain,
|
||
|
|
]
|
||
|
|
if (
|
||
|
|
req.url
|
||
|
|
and comes_from
|
||
|
|
and comes_from.link
|
||
|
|
and comes_from.link.netloc in domains_not_allowed
|
||
|
|
):
|
||
|
|
# Explicitly disallow pypi packages that depend on external urls
|
||
|
|
raise InstallationError(
|
||
|
|
"Packages installed from PyPI cannot depend on packages "
|
||
|
|
"which are not also hosted on PyPI.\n"
|
||
|
|
"{} depends on {} ".format(comes_from.name, req)
|
||
|
|
)
|
||
|
|
|
||
|
|
return InstallRequirement(
|
||
|
|
req,
|
||
|
|
comes_from,
|
||
|
|
isolated=isolated,
|
||
|
|
use_pep517=use_pep517,
|
||
|
|
user_supplied=user_supplied,
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
def install_req_from_parsed_requirement(
|
||
|
|
parsed_req: ParsedRequirement,
|
||
|
|
isolated: bool = False,
|
||
|
|
use_pep517: Optional[bool] = None,
|
||
|
|
user_supplied: bool = False,
|
||
|
|
config_settings: Optional[Dict[str, Union[str, List[str]]]] = None,
|
||
|
|
) -> InstallRequirement:
|
||
|
|
if parsed_req.is_editable:
|
||
|
|
req = install_req_from_editable(
|
||
|
|
parsed_req.requirement,
|
||
|
|
comes_from=parsed_req.comes_from,
|
||
|
|
use_pep517=use_pep517,
|
||
|
|
constraint=parsed_req.constraint,
|
||
|
|
isolated=isolated,
|
||
|
|
user_supplied=user_supplied,
|
||
|
|
config_settings=config_settings,
|
||
|
|
)
|
||
|
|
|
||
|
|
else:
|
||
|
|
req = install_req_from_line(
|
||
|
|
parsed_req.requirement,
|
||
|
|
comes_from=parsed_req.comes_from,
|
||
|
|
use_pep517=use_pep517,
|
||
|
|
isolated=isolated,
|
||
|
|
global_options=(
|
||
|
|
parsed_req.options.get("global_options", [])
|
||
|
|
if parsed_req.options
|
||
|
|
else []
|
||
|
|
),
|
||
|
|
hash_options=(
|
||
|
|
parsed_req.options.get("hashes", {}) if parsed_req.options else {}
|
||
|
|
),
|
||
|
|
constraint=parsed_req.constraint,
|
||
|
|
line_source=parsed_req.line_source,
|
||
|
|
user_supplied=user_supplied,
|
||
|
|
config_settings=config_settings,
|
||
|
|
)
|
||
|
|
return req
|
||
|
|
|
||
|
|
|
||
|
|
def install_req_from_link_and_ireq(
|
||
|
|
link: Link, ireq: InstallRequirement
|
||
|
|
) -> InstallRequirement:
|
||
|
|
return InstallRequirement(
|
||
|
|
req=ireq.req,
|
||
|
|
comes_from=ireq.comes_from,
|
||
|
|
editable=ireq.editable,
|
||
|
|
link=link,
|
||
|
|
markers=ireq.markers,
|
||
|
|
use_pep517=ireq.use_pep517,
|
||
|
|
isolated=ireq.isolated,
|
||
|
|
global_options=ireq.global_options,
|
||
|
|
hash_options=ireq.hash_options,
|
||
|
|
config_settings=ireq.config_settings,
|
||
|
|
user_supplied=ireq.user_supplied,
|
||
|
|
)
|