pex 2.81.0

---

2.81.0

This release adds the ability to set a custom scie entrypoint for PEX scies using --scie-exe,
--scie-args and --scie-env, as well as bind resource paths to environment variables using
--scie-bind-resource-path. The combination of these new features allows broad flexibility
defining a PEX scie's boot command.

Additionally, the pex3 scie create command gains the ability to use a URL for the PEX to convert
to a scie and optionally specify a size (via #size=<expected size>) and / or fingerprint (via
#<algorithm>=<expected fingerprint>) to verify the download against.

• Support converting existing Pants PEXes to performant scies. (#3072)

---

file	sha256	size
pex	654c561d4fc2b833f1ed6b23cf9251eb7dab812b12deaac365d7150afd96fca5	4945588
pex-linux-aarch64	fc9c13c99a7fd95091c70efb05314f1efe48e271e9a48a973c377bab863241a9	36571854
pex-linux-armv7l	ed9b006695021b50c118804d4f29f48e0b937093c48d60b0bf8a47d890b20c72	32922602
pex-linux-riscv64	5ba650d4e336ac1a53b2331c918290a4d25095c944b14de9f93252358fd77bea	33055690
pex-linux-x86_64	d2370a7cb033e20a11b69ba3f602fab5fa00c22b3ecc2b6f6dcb823762dd87b2	42507020
pex-macos-aarch64	0cf699bbaa495341244034a0b64f4cb4372812a0001e1f8f0d0d3c7c4435d2e3	24421616
pex-macos-x86_64	140f2a4885a8cffd075a59a5642970250fb515b16d0d2b8a335b6953fc26abe8	24585625
pex-musl-linux-aarch64	0a9ffe2d73170a85f666cb4d45fb3e4c8c01f495dc6eb0ec500d0059bf874d29	35814049
pex-musl-linux-x86_64	35fa886bd676023527bf27508c105fff7b2024ef130f0b966b32e2a00130a126	35919649

pex 2.80.0

---

2.80.0

This release adds the pex3 scie create tool for creating scies from existing PEX files. This
works for PEXes created by Pex 2.1.25 (released on January 21st, 2021) and newer.

• Add a pex3 scie create command. (#3070)

---

file	sha256	size
pex	75a4fdeabc8a0caf8f630e849a91014bb4de894804944ea5eb1eee6a8cfe25d8	4942767
pex-linux-aarch64	739ea2cb188016dbc14dfd721b10467bab821679c3f1a7961cc843f276ec9ab2	36566234
pex-linux-armv7l	d19e9fad74395e785e10f4c837dbc847db590de6194892d48972166d9ae6c807	32916985
pex-linux-riscv64	873d057a09801061828ea488a9df710e924f8395fc457d5617f389365f753686	33050075
pex-linux-x86_64	702a286806a5d0c6d83525d540cf9b4535cc5b633f3db8b10fb5aa39fe3d5225	42501412
pex-macos-aarch64	091b9b0a51a51dced8a0a910bf2a84805425fb6c050a2449f902c5683f05c8ae	24415994
pex-macos-x86_64	8934444df949a6d51720c8be9031fc625605c28751167a1d1ede9c6c24e9aa4e	24580011
pex-musl-linux-aarch64	dd457ad2294b258af0db028046f6d59a0ea2f9893f72221442a1d947d435b147	35808432
pex-musl-linux-x86_64	379b6e33e030f0d05fffe56df36def4b95e741b03ed0b007c8b4b7246d317346	35914037

pex 2.79.0

---

2.79.0

This release adds the CPython[free-threaded] alias for CPython+t and the CPython[gil] alias
for CPython-t when writing interpreter constraints.

• Add CPython[{free-threaded,gil}] aliases for CPython{+,-}t. (#3068)

---

file	sha256	size
pex	f7a50bfb31c2304f4b30ef6eabb623c86abae0b5841dc3d8a147afd1568ecd4e	4940234
pex-linux-aarch64	066a968158b7c67508cce1f123ab0899829b2f5031e0960607f0f5473b6070c0	36564456
pex-linux-armv7l	d7270cb4caa68072869b534107dbbdc70007344516c2b2acb73044fa18722f9a	32890495
pex-linux-riscv64	c5a0154fb4d56c4efa8c3354983da2b94e8d658fdabc1762dcaa792dafbbc0f7	33046077
pex-linux-x86_64	dcb6a7de55092ce4247aec821ea3b7e054ee3c19cd8e75e4abfe26bf81e78094	42557956
pex-macos-aarch64	4f5649bc80893f98e4c8f96807778ba1fcb87e06f15bab39a84cbb808ccc60f2	24390182
pex-macos-x86_64	52c092758aa6b6ef2dd7d85300c1ca32fb08d0fbf2e565a151a41928671fb217	24573581
pex-musl-linux-aarch64	379edd7932de66d21428b36b0d4e7cbbe1713084b0a88ddc12978604dde27427	35792359
pex-musl-linux-x86_64	77c02e0bd485b76c4c7ca7f2025415b77ecbea5ad6b7f4f5430036887155989f	35668085

pex 2.78.0

---

2.78.0

This release adds support for the CPython+t implementation name in interpreter constraints to

allow constraining selected interpreters to CPython interpreters built with free-threading support.
The existing CPython implementation selects from either classic GIL enabled CPython interpreters
or CPython free-threaded interpreters as was the case previously. The CPython-t implementation
name can be used to require classic GIL-only CPython interpreters.

• Support CPython+t in ICs to select free-threaded CPython. (#3067)

---

file	sha256	size
pex	ab9022eebc40960105bc67b74a6b5f82cd879e4baa7de30a70c04ac96fe2348a	4939652
pex-linux-aarch64	991abbc1d6d757d99c5781724f92a79868c47f875482e3e264116b9ff8d5cf96	36563866
pex-linux-armv7l	fb493993da6099034a869a3bc33ce586111b1b84af37a7b050c61ae850c28702	32889914
pex-linux-riscv64	adfe8ba42fc191d32a92dba287b546e582d41f2fad691bee3a61574a00c20061	33045494
pex-linux-x86_64	6ad66f6c50b190fb6244c74a9c1880aeed5ca3faf6fa11bb6ca348f2c6ef82d9	42557373
pex-macos-aarch64	517baf3cffddadf23bc700edbd7d395468b092e47ae45415be4f9d0f653432cf	24389595
pex-macos-x86_64	0831c63a53318db158b4e09f6b590fd9ddbfade8abdbe4949984e04f9ec06133	24573001
pex-musl-linux-aarch64	a435cec291113b5d03cd8eb25c5016d89fa41b415119a606d5a467b032b32d67	35791777
pex-musl-linux-x86_64	cdb17463d9116d4e7d6254e8a6198734b9299df385ef80c7647ea2fadd04d11d	35667498

pex 2.77.3

---

2.77.3

This release updates vendored Pip's vendored certifi's cacert.pem to that from certifi 2026.1.4.

• Update vendored Pip's CA cert bundle. (#3065)

---

file	sha256	size
pex	24f13372b9d2806a2fa12ed5cbd698fbf463a25a61ba754ce33aa608231fccbe	4938142
pex-linux-aarch64	7df37ff9d7a59931dba87271f9731dad635983dd17cfb0589b40ad2bcecbed95	36562369
pex-linux-armv7l	9880e00cf3077bdb94b203007d727055372f8cfb7acd1eeb88c245f7282894ae	32888413
pex-linux-riscv64	14464cab8d41d597f74f1d2b46a2b54120fab58ca7b936520090b9721529bc91	33043987
pex-linux-x86_64	cbee640e2540569502fba47a8bd3de97bad30b9560e518e5561fff8fba88d829	42555866
pex-macos-aarch64	910004d635779f497401c40a01f7400b31ff611e40923d84f33e60ece463b4e3	24388089
pex-macos-x86_64	cef000aef065589907bde26c7176f7b38c00ccba89584420fdab52c56128d1dc	24571489
pex-musl-linux-aarch64	482bba5bd105c8915413690ac649dabe27604ae34943cbf79e26f0e93ecdedaa	35790272
pex-musl-linux-x86_64	d2ac8b32a5306d00338e5de2ce98ed43759cc9e70de075d5bbdc0640400cd7bc	35665995

pex 2.77.2

---

2.77.2

This release fixes venv creation from PEXes to avoid declaring false collisions in __init__.py
files when the venv uses Python 3.9 or greater.

• Compare ASTs of colliding venv __init__.py. (#3063)

---

file	sha256	size
pex	e45bc2336bda18cb0681f24b7299350d9b62b91168e43e5dca8a7547be989334	4944568
pex-linux-aarch64	d991fae010dc45ae77022f524e2dc9e0f150de9dd9475698a1df9f7bdd26d380	36568781
pex-linux-armv7l	c03c5f0be53c49213288c4878198a918afdb6afe56f428b736a5ac49d0995ae8	32894827
pex-linux-riscv64	7906b16d845be59d46856f0938dc4336b4383eb8f28e89f96725d0077b3b0cf1	33050408
pex-linux-x86_64	fae280e5ca071a34e52fa1f5a50d1a74855a837219ee5ee008b7fd4264123317	42562283
pex-macos-aarch64	4ebc49dd5ba5623d6337a80dd539c9f9c6001f8979f30d40555514b291a79943	24394512
pex-macos-x86_64	52d9e97530d45a7bd8462629f9e0d405a5f88b1bc0d175d1396983ef7ab5f68d	24577915
pex-musl-linux-aarch64	9cf1778c1f32637812ad28e378d3c2ddc844b401c22331106b5b00cdd38eb78b	35796695
pex-musl-linux-x86_64	d3e6e3ebce12bdf05473777c6849b1e366ca3c4dd6512407aae62da2cd5746b8	35672408

pex 2.77.1

---

2.77.1

This release fixes a very old bug where the Pex PEX (or any other PEX created with
--no-strip-pex-env) would, in fact, strip PEX_PYTHON and PEX_PYTHON_PATH.

• Fix PEX_PYTHON{,_PATH} stripping on Pex re-exec. (#3061)

---

file	sha256	size
pex	7d80c62ba2119be318518298c0810c2b862a61fd7ce8ba29c811e5e72239569d	4944053
pex-linux-aarch64	3278a65bea6facd4aef57aed28c1e89efdbf3afe8ec94b17d2d40d6b02288b1f	36568273
pex-linux-armv7l	44193ac4f7fd0146db8d0b54f3b0a4596a9422981de272e2bd37d4cf5afbd8e7	32894318
pex-linux-riscv64	ccd89cae91e03c1a45a7b93a07ef86bb90ed408f2a5d33401f7d36550dd7cbc1	33049897
pex-linux-x86_64	6a97e2bf297216a5a56b389ef94c11a0557cdef6d4547163e2a2d379772b8a04	42561769
pex-macos-aarch64	7f41c6352d9f49e1d66e1334a5df376b3b02ff094b0e5511b6ce6a292797ee78	24393996
pex-macos-x86_64	bc071cea241063ae22a1a3d3f4f61dc75db593e18fa41e2ff7394f8ead0dc3f9	24577404
pex-musl-linux-aarch64	692a0995c1738a4f40c93c464e5d84361eb9528fb7a12dec371605884e2f3be6	35796174
pex-musl-linux-x86_64	473a8acc96716d43f1119bb37d944cb09766b413f1c671d5d8fb7a049ba1fea9	35671900

pex 2.77.0

---

2.77.0

This release has no fixes or new features per-se, but just changes the set of distributions that
Pex releases to PyPI. Previously Pex released an sdist and a universal (py2.py3-none-any) .whl.
Pex now releases two wheels in addition to the sdist. The py3.py312-none-any.whl targets
Python>=3.12 and has un-needed vendored libraries elided making it both a smaller .whl and less
prone to false-positive security scan issues since unused vendored code is now omitted. The other
wheel carries the same contents as prior and supports creating PEXes for Python 2.7 and
Python>=3.5,<3.12.

• Split Pex .whl into two .whls. (#3057)

---

file	sha256	size
pex	08f3dfcc9f07be2f789d1abb2248fa38e595c2d48093e1d1b29277ae67c1e7a6	4944069
pex-linux-aarch64	b584e418c5b870b8003bc71c29d3745f6290a0c4de18394d90571ca95e09de48	36568288
pex-linux-armv7l	540b81d8e90138b1571d312f81b9d767dd99145ae6ad7d25df8126dfdff238d0	32894327
pex-linux-riscv64	2c8ce37c54f55b729102fa5c142e9133faf869be42290ada3280dacbbd8879a8	33049912
pex-linux-x86_64	6026789883c644e97ede6d5bb3246cb4242d4d5174ec013b8b6e7df4e8856da5	42561781
pex-macos-aarch64	82f6bc687f9d923e0fa9542a1b216bd615e0025df1a117c464a41a77f8374bc5	24394013
pex-macos-x86_64	a92338c29e1afe6294c57008d1c41f61bb093eb6ef4b9fc878900dcde4fcb1b6	24577414
pex-musl-linux-aarch64	4e0ce93c06aaab15b59fcafbd0703ec66a747b68dcfef3f2fd6b3308aa58bc2a	35796192
pex-musl-linux-x86_64	dac5ca9e298aacd274904fc5f4d83da466da5b168721e8224c77b21cfd47b6d7	35671911

pex 2.76.1

---

2.76.1

This release fixes bootstrapping of Pips specified via --pip-version to respect Pex Pip
configuration options (like custom indexes) under Python 3.12 and newer.

• Fix Pip bootstrap to respect Pip config for Python >= 3.12. (#3054)

---

file	sha256	size
pex	57192b7cf4a870c8f2d6fd1fe8125fb02ca6a02c83328c6291debb54fc5cb3a2	4941852
pex-linux-aarch64	a92cba14fc006df6141fc396241948e36d090f71af55f19ae520ad22506fa86c	36566066
pex-linux-armv7l	4414ecfd825c23ecfa839c73294642153712bc82d4a2f1214c430472c7bcde0f	32892114
pex-linux-riscv64	ad3ea5a7cb9c1d61560ee242cddfc5008b14a85b2db77f850057e46ee69c00b3	33047688
pex-linux-x86_64	c76c476a6dcd2ea8b8498c5fe3b7ac8e456e84b3e3fed57422cb4713d045c516	42559568
pex-macos-aarch64	cdf4865ccb04619fc176a87413fad4ef32443837c177e612e46de3f6f9f11d23	24391798
pex-macos-x86_64	ff9135bdc92255b16e390e1453cefadbb9d27ea9b1781802277a1b6c83f76261	24575194
pex-musl-linux-aarch64	d2d7c27c126d027a98796c50457dc97c2a090a2892974233a6e7316d1212a9ce	35793977
pex-musl-linux-x86_64	1ede3fad35917c581cf5046a3be9a44f0336cbbffbade21b0937164870eb554f	35669698

pex 2.76.0

---

2.76.0

This release adds support for --no-scie-pex-entrypoint-env-passthrough to trigger direct execution
of --venv PEX scie script entrypoints. This performance optimization mirrors the existing default
--no-scie-busybox-pex-entrypoint-env-passthrough for busybox scies, but must be selected by
passing --no-scie-pex-entrypoint-env-passthrough explicitly. In addition, the VIRTUAL_ENV env
var is now guaranteed to be set for all --venv PEX scies.

• Add scie support for direct exec of venv scripts. (#3053)

---

file	sha256	size
pex	d9544b1fb325b63167b20fc50b38857d653a14d6f5e0f0d6b9467919504ed68e	4941341
pex-linux-aarch64	45d9510d133fd65dff98c901a41ac277faa7cbfcac763911deb449ecd9c22db3	36565562
pex-linux-armv7l	9ebc3c1a19e6e246bd25d7e203ff698482374627690841ed13469a9c03aab9f0	32891604
pex-linux-riscv64	fc785eae031c2b099b81aa0ddd2badf548665fe79eccad40f004e0176a3040f7	33047180
pex-linux-x86_64	d1783d69c843c16fb12213bcbc5ff4e278e5152b0b0d0067d6950bbdd61e3c31	42559057
pex-macos-aarch64	7cb397fe90b5bc3341f47d072c6536375a37f043edb800350e2ed14ec69ccda2	24391283
pex-macos-x86_64	3362b3e3e08289ae057ed3b4d3df499282e51a58b611bd8dc9b949c70d522701	24574688
pex-musl-linux-aarch64	324087aa36fef1cd424dcaa280f82891314fff56c6d56f0ab4b99cf134820640	35793466
pex-musl-linux-x86_64	8ada916536732e578e1385f7db25b34d5b5022b2b966be1703a33beba2de9a81	35669189