vyges-tools/pdk-catalog

The Vyges open-PDK catalog — a single, quickly-readable index of the PDKs the Vyges stack knows how to present, plus the full descriptor for each. It is to PDKs what vyges-ip/vyges-ip-catalog is to IP: one generated index.json for fast lookup, with each row pointing at the full manifest.

pdk-catalog/
  index.json                    # the aggregated index (quick lookup + version index)
  descriptors/<name>.vyges-pdk.json   # the full PDK descriptors (schema: vyges.com/schema/v1/vyges-pdk.schema.json)

index.json

Schema vyges-pdk-catalog/index-v1. One row per PDK — a lightweight summary plus pointers:

field	meaning
name node foundry	identity
design_types	digital / analog / mixed-signal / rf capability tags
source	ciel (open registry) · local (mirror / on-disk) · nda
latest / versions[]	the version index — newest known release + all known releases
descriptor_url	raw URL of the full *.vyges-pdk.json (the "manifest_url")
mirror	the Vyges data mirror, when one exists
content_hash	sha256 of the descriptor (lets a client detect changes on refresh)

latest + versions[] are what let a client show "↑ vX.Y available" without a live query — the catalog is the version index.

Regeneration

scripts/gen_index.py regenerates index.json from the PDK mirror repos Vyges maintains: it refreshes versions[] / latest from each dedicated mirror's git tags, recomputes every content_hash, and stamps generated_at / generated_sha (the catalog HEAD at generation). .github/workflows/update-index.yml runs it daily (06:00 UTC, plus workflow_dispatch) and commits any change — the same pattern as vyges-ip-catalog.

The shared open_pdks builder is not used to version sky130/gf180 (its tags are build-system releases, not PDK versions), so those two stay hand-maintained.

The PDKs

PDK	node	foundry	source	mirror
sky130a	130nm	SkyWater	local	open_pdks builder
gf180mcu	180nm	GlobalFoundries	local	open_pdks builder
ihp_sg13g2	130nm SiGe BiCMOS	IHP	local	ihp-open-pdk
nangate45	45nm	Nangate	local	nangate45
asap7	7nm (predictive)	ASU	local	asap7
icsprout55	55nm	icsprout	local	icsprout55

Vyges mirrors the non-Ciel open PDKs under github.com/vyges-tools/ for reproducibility, availability, and a consistent data home. sky130 and gf180 are built from the mirrored open_pdks builder (origin rtimothyedwards/open_pdks) and installed under $PDK_ROOT.

Consuming it

vyges pdk-store ships a cached snapshot of index.json compiled into the binary and refreshes it from here on connectivity, so list works offline and stays current online. The full descriptor for any PDK is fetched on demand via its descriptor_url.

---

© Vyges 2026. All Rights Reserved. PDK descriptors describe third-party PDKs; each PDK remains under its own upstream license.