opencode v2

[SubhadipJana1409]

opencode v2 support this old v1 set up ?

[jima05]

Partly. I upgraded OpenCode 1.9 -> 2.0.32 with the ECC .opencode setup, so here is what carried over and what didn't (Windows 10, ECC 2.2.2).

Works unchanged: opencode.json with agents, commands, skills paths, instructions and an MCP server. V2 reads the V1 config format.

Does not work: the V1 plugin code (.opencode/plugins/ecc-hooks.ts, index.ts, lib/). OpenCode 2.0 refuses to load it ("3 plugins failed"). The V2 migration guide says V1 plugin implementations don't run and need porting to the new API (Plugin.define + setup(ctx), imported from @opencode/plugin): https://opencode.ai/v2/docs/build/plugins/migrate-v1

Port: I rewrote ecc-hooks for the V2 API and tested it: https://gist.github.com/jima05/49b57f84a207df01a3a26353d98cc50d
Verified: plugin loads, session start hook, console.log warning after edit/write, permission hook is called, end-of-task audit (V2 has no session.idle event in my logs; it fires session.execution.succeeded).
Not tested: compaction, shell.env, strict-profile prettier/tsc hooks, macOS/Linux. The two custom tools (changed-files, dependency-analyzer) are not ported.

Upgrade gotcha: if you get "API key has expired" after upgrading, an old saved key in the OpenCode data folder may be the cause. Re-sign-in with opencode auth login opencode.

The port was written with AI assistance (Claude) and tested by hand. Maintainers, feel free to use, change or replace it. Would you want a separate V2 entry point or a dual export?

https://gist.github.com/jima05/49b57f84a207df01a3a26353d98cc50d