Sourced from pex's releases.

pex 2.1.19

---

2.1.19

This release adds the --python-path option, which allows controlling the interpreter search paths when building a PEX.

The release also removes --use-first-matching-interpreter, which was a misfeature. If you want to use fewer interpreters when building a PEX, use more precise values for --interpreter-constraint and/or --python-path, or use --python or --platform.

• Add --python-path to change interpreter search paths when building a PEX. (#1077)
• Remove --use-first-matching-interpreter misfeature. (#1076)
• Encapsulate --inherit-path handling. (#1072)

pex 2.1.18

---

2.1.18

This release brings official support for Python 3.9 and adds a new --tmpdir option to explicitly control the TMPDIR used by Pex and its subprocesses. The latter is useful when building PEXes in space-constrained environments in the face of large distributions.

The release also fixes --cert and --client-cert so that they work with PEP-518 builds in addition to fixing bytecode compilation races in highly parallel environments.

• Add a --tmpdir option to the Pex CLI. (#1068)
• Honor sys.executable unless macOS Framework. (#1065)
• Add Python 3.9 support. (#1064)
• Fix handling of --cert and --client-cert. (#1063)
• Add atomic_directory exclusive mode. (#1062)
• Fix --cert for PEP-518 builds. (#1060)

pex 2.1.17

---

2.1.17

This release fixes a bug in --resolve-local-platforms handling that made it unusable in 2.1.16 (#1043) as well as fixing a long standing file handle leak (#1050) and a bug when running under macOS framework builds of Python (#1009).

• Fix --unzip performance regression. (#1056)
• Fix resource leak in Pex self-isolation. (#1052)
• Fix use of iter_compatible_interpreters. (#1048)
• Do not rely on sys.executable being accurate. (#1049)
• slightly demystify the relationship between platforms and interpreters in the library API and CLI (#1047)
• Path filter for PythonInterpreter.iter_candidates. (#1046)

Sourced from pex's changelog.

2.1.19

This release adds the --python-path option, which allows controlling the interpreter search paths when building a PEX.

The release also removes --use-first-matching-interpreter, which was a misfeature. If you want to use fewer interpreters when building a PEX, use more precise values for --interpreter-constraint and/or --python-path, or use --python or --platform.

• Add --python-path to change interpreter search paths when building a PEX. (#1077) [PR #1077](pantsbuild/pex#1077)
• Remove --use-first-matching-interpreter misfeature. (#1076) [PR #1076](pantsbuild/pex#1076)
• Encapsulate --inherit-path handling. (#1072) [PR #1072](pantsbuild/pex#1072)

2.1.18

This release brings official support for Python 3.9 and adds a new --tmpdir option to explicitly control the TMPDIR used by Pex and its subprocesses. The latter is useful when building PEXes in space-constrained environments in the face of large distributions.

The release also fixes --cert and --client-cert so that they work with PEP-518 builds in addition to fixing bytecode compilation races in highly parallel environments.

• Add a --tmpdir option to the Pex CLI. (#1068) [PR #1068](pantsbuild/pex#1068)
• Honor sys.executable unless macOS Framework. (#1065) [PR #1065](pantsbuild/pex#1065)
• Add Python 3.9 support. (#1064) [PR #1064](pantsbuild/pex#1064)
• Fix handling of --cert and --client-cert. (#1063) [PR #1063](pantsbuild/pex#1063)
• Add atomic_directory exclusive mode. (#1062) [PR #1062](pantsbuild/pex#1062)
• Fix --cert for PEP-518 builds. (#1060) [PR #1060](pantsbuild/pex#1060)

2.1.17

This release fixes a bug in --resolve-local-platforms handling that made it unusable in 2.1.16 (#1043) as well as fixing a long standing file handle leak (#1050) and a bug when running under macOS framework builds of Python (#1009).

• Fix --unzip performance regression. (#1056) [PR #1056](pantsbuild/pex#1056)
• Fix resource leak in Pex self-isolation. (#1052) [PR #1052](pantsbuild/pex#1052)
• Fix use of iter_compatible_interpreters. (#1048) [PR #1048](pantsbuild/pex#1048)
• Do not rely on sys.executable being accurate. (#1049) [PR #1049](pantsbuild/pex#1049)
• slightly demystify the relationship between platforms and interpreters in the library API and CLI (#1047) [PR #1047](pantsbuild/pex#1047)
• Path filter for PythonInterpreter.iter_candidates. (#1046) [PR #1046](pantsbuild/pex#1046)
• Add type hints to util.py and tracer.py (#1044) [PR #1044](pantsbuild/pex#1044)
• Add type hints to variables.py and platforms.py (#1042) [PR #1042](pantsbuild/pex#1042)
• Add type hints to the remaining tests (#1040) [PR #1040](pantsbuild/pex#1040)
• Add type hints to most tests (#1036) [PR #1036](pantsbuild/pex#1036)
• Use MyPy via type comments (#1032) [PR #1032](pantsbuild/pex#1032)

2.1.16

This release fixes a bug in sys.path scrubbing / hermeticity (#1025) and a bug in the -D / --sources-directory and -R / --resources-directory options whereby PEP-420 implicit (namespace) packages were not respected (#1021).

• Improve UnsatisfiableInterpreterConstraintsError. (#1028) [PR #1028](pantsbuild/pants#1028)
• Scrub direct sys.path manipulations by .pth files. (#1026) [PR #1026](pantsbuild/pants#1026)
• PEX zips now contain directory entries. (#1022) [PR #1022](pantsbuild/pants#1022)

• d70512c Prepare 2.1.19 (#1079)
• f6ec8ec Add --python-path to change interpreter search paths when building a PEX (#...
• dee8c4f Remove --use-first-matching-interpreter misfeature (#1076)
• 20a67c3 Encapsulate --inherit-path handling. (#1072)
• 8a69aae Fixup freeze recipe for Pex 2.x. (#1073)
• 46bec79 Prepare the 2.1.18 release. (#1071)
• a22cbae Add a --tmpdir option to the Pex CLI. (#1068)
• 33a4304 Honor sys.executable unless macOS Framework. (#1065)
• 5f2c290 Add Python 3.9 support. (#1064)
• 4580055 Fix handling of --cert and --client-cert. (#1063)
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