1.2.0b1

Fixed

• Fixed an issue where the system environment couldn't be detected (#4406).
• Fixed another issue where the system environment couldn't be detected (#4433).
• Replace deprecated requests parameter in uploader (#4580).
• Fix an issue where venv are detected as broken when using MSys2 on windows (#4482).
• Fixed an issue where the cache breaks on windows (#4531).
• Fixed an issue where a whitespace before a semicolon was missing on poetry export (#4575).
• Fixed an issue where markers were not correctly assigned to nested dependencies (#3511).
• Recognize one digit version in wheel filenames (#3338).
• Fixed an issue when locale is unset (#4038).
• Fixed an issue where the fallback to another interpreter didn't work (#3475).
• Merge any marker constraints into constraints with specific markers (#4590).
• Normalize path before hashing so that the generated venv name is independent of case on Windows (#4813).
• Fixed an issue where a dependency wasn't upgrade by using @latest on poetry update (#4945).
• Fixed an issue where conda envs in windows are always reported as broken(#5007).
• Fixed an issue where Poetry doesn't find its own venv on poetry self update (#5049).
• Fix misuse of pretty_constraint (#4932).
• Fixed an issue where the reported python version used for venv creation wasn't correct (#5086).
• Fixed an issue where the searched package wasn't display in the interactive dialog of poetry init (#5076).
• Fixed an issue where Poetry raises an exception on poetry show when no lock files exists (#5242).
• Fixed an issue where Poetry crashes when optional vcs_info.requested_version in direct_url.json wasn't included (#5274).
• Fixed an issue where dependencies with extras were updated despite using --no-update (#4618).
• Fixed various places where poetry writes messages to stdout instead of stderr (#4110, #5179).
• Ensured that when complete packages are created dependency inherits source and resolved refs from package (#4604).
• Ensured that when complete packages are created dependency inherits subdirectory from package if supported (#4604).
• Fixed an issue where POETRY_EXPERIMENTAL_NEW_INSTALLER needs to be set to an empty string to disable it (#3811).

Added

• poetry show <package> now also shows which packages depend on it (#2351).
• The info dialog by poetry about now contains version information about installed poetry and poetry-core (#5288).
• Print error message when poetry publish fails (#3549).
• Added in info output to poetry lock --check (#5081).
• Added new argument --all for poetry env remove to delete all venv of a project at once (#3212).
• Added new argument --without-urls for poetry export to exclude source repository urls from the exported file (#4763).
• Added a new installer.max-workers property to the configuration (#3516).
• Added experimental option virtualenvs.prefer-active-python to detect current activated python (#4852).
• Added better windows shell support (#5053).

Changed

• Drop python3.6 support (#5055).
• Exit with callable return code in generated script (#4456).
• Internal use of the pep517 high level interfaces for package metadata inspections have been replaced with the build package. (#5155).
• Poetry now raises an error if the python version in the project environment is no longer compatible with the project (#4520).