Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/pip/_internal/req/__init__.py @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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1 import collections |
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2 import logging |
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3 |
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4 from pip._internal.utils.logging import indent_log |
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5 from pip._internal.utils.typing import MYPY_CHECK_RUNNING |
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6 |
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7 from .req_file import parse_requirements |
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8 from .req_install import InstallRequirement |
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9 from .req_set import RequirementSet |
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10 |
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11 if MYPY_CHECK_RUNNING: |
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12 from typing import Iterator, List, Optional, Sequence, Tuple |
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13 |
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14 __all__ = [ |
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15 "RequirementSet", "InstallRequirement", |
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16 "parse_requirements", "install_given_reqs", |
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17 ] |
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18 |
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19 logger = logging.getLogger(__name__) |
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20 |
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21 |
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22 class InstallationResult: |
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23 def __init__(self, name): |
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24 # type: (str) -> None |
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25 self.name = name |
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26 |
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27 def __repr__(self): |
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28 # type: () -> str |
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29 return f"InstallationResult(name={self.name!r})" |
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30 |
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31 |
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32 def _validate_requirements( |
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33 requirements, # type: List[InstallRequirement] |
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34 ): |
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35 # type: (...) -> Iterator[Tuple[str, InstallRequirement]] |
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36 for req in requirements: |
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37 assert req.name, f"invalid to-be-installed requirement: {req}" |
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38 yield req.name, req |
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39 |
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40 |
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41 def install_given_reqs( |
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42 requirements, # type: List[InstallRequirement] |
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43 install_options, # type: List[str] |
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44 global_options, # type: Sequence[str] |
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45 root, # type: Optional[str] |
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46 home, # type: Optional[str] |
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47 prefix, # type: Optional[str] |
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48 warn_script_location, # type: bool |
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49 use_user_site, # type: bool |
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50 pycompile, # type: bool |
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51 ): |
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52 # type: (...) -> List[InstallationResult] |
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53 """ |
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54 Install everything in the given list. |
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55 |
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56 (to be called after having downloaded and unpacked the packages) |
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57 """ |
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58 to_install = collections.OrderedDict(_validate_requirements(requirements)) |
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59 |
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60 if to_install: |
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61 logger.info( |
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62 'Installing collected packages: %s', |
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63 ', '.join(to_install.keys()), |
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64 ) |
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65 |
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66 installed = [] |
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67 |
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68 with indent_log(): |
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69 for req_name, requirement in to_install.items(): |
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70 if requirement.should_reinstall: |
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71 logger.info('Attempting uninstall: %s', req_name) |
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72 with indent_log(): |
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73 uninstalled_pathset = requirement.uninstall( |
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74 auto_confirm=True |
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75 ) |
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76 else: |
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77 uninstalled_pathset = None |
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78 |
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79 try: |
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80 requirement.install( |
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81 install_options, |
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82 global_options, |
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83 root=root, |
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84 home=home, |
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85 prefix=prefix, |
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86 warn_script_location=warn_script_location, |
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87 use_user_site=use_user_site, |
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88 pycompile=pycompile, |
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89 ) |
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90 except Exception: |
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91 # if install did not succeed, rollback previous uninstall |
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92 if uninstalled_pathset and not requirement.install_succeeded: |
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93 uninstalled_pathset.rollback() |
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94 raise |
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95 else: |
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96 if uninstalled_pathset and requirement.install_succeeded: |
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97 uninstalled_pathset.commit() |
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98 |
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99 installed.append(InstallationResult(req_name)) |
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100 |
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101 return installed |