Module sizes

These are gzip-compressed production output sizes from the committed tests/fixtures/size-snapshot.json. Run vp run build && vp run size:snapshot whenever the toolchain, adapters, or exposed APIs change.

Module	Gzip size
runtime	6.67 MiB
math	0.79 KiB
hashlib	0.65 KiB
itertools	0.50 KiB
random	0.55 KiB
statistics	0.25 KiB
fractions	0.24 KiB
decimal	0.22 KiB
hmac	0.18 KiB
base64	0.22 KiB
binascii	0.20 KiB
bisect	0.17 KiB
heapq	0.20 KiB
string	0.36 KiB
textwrap	0.18 KiB
csv	0.16 KiB
json	0.34 KiB
html	0.15 KiB
urllib-parse	0.21 KiB
datetime	0.24 KiB
calendar	0.19 KiB
uuid	0.31 KiB

Installed package

Package	Gzip size
pystd (all modules)	6.68 MiB

The shared runtime retains an 18 MiB uncompressed safety ceiling; facades retain a 16 MiB ceiling. Vitest allows up to 1% gzip variation between component builds and rejects larger regressions against the snapshot. Every subpath uses the same internal CPython runtime, so adding modules does not duplicate it.