nxv @ urandom.io
api operational · p50 34ms index · 2026-04-19 · commit a7f2c91 nixpkgs · 2017-01 → 2026-04
// NIX VERSION INDEX  ·  v0.6.2

Every version of every
nix package ,
indexed since 2017.

Find the exact nixpkgs commit for the version you need — Python 2.7 for that legacy project, or an obscure patched Ruby from 2019. Query locally, via the CLI, or against nxv serve .

nxv :~ $
try:
results / — view:
─────────────────────────────────────────────────────────────────────────────────────────────────────────────────
package · attr version first seen last seen actions
activity · 30m
30m ago now
latency · p50 / p95 / p99
34 ms / 112 ms / 287 ms
bloom filter hit rate · 97.2%
fts5 queries · 124,918 / day
self-host
nix run github:utensils/nxv \
  -- serve --host 0.0.0.0
read the guide →
copied.