Developer Tools

vlegacy

Which older format and library builtins are still available here.

Released v1.0.0 · 2026-09-28

Import

use "stdlib/legacy.ven"

Detects, in pure Venutian, which older format and library builtins, such as the earlier key value store and the earlier compression formats, are present and callable on the virtual machine a program runs under, so the program can adapt to what it finds.

vlegacy.ven

caps = legacy_capabilities()
print map_get(caps, "gzip")

Reference (2 functions)

legacy_capabilities
legacy_capabilities_report

API reference

`legacy_capabilities()`

caps = legacy_capabilities()
print map_get(caps, "gzip")
:: prints: yes

`legacy_capabilities_report()`

print legacy_capabilities_report()
:: prints: dbm: UNAVAILABLE on this build
::         gzip: available
::         bz2: available
::         lzma: available
::         regex: available

API reference

legacy_capabilities()

legacy_capabilities_report()

Get notified when vlegacy changes

`legacy_capabilities()`

`legacy_capabilities_report()`