feat: opencode.installPackage toggle and OpenCode README section#2
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Adds `darkmatter.agentSkills.opencode.installPackage` (default true) so consumers managing the opencode binary outside Home Manager (Homebrew, manual install) can skip HM's `pkgs.opencode` add to `home.packages`. When false, a tiny stub derivation is substituted into `programs.opencode.package` — required because setting it to null currently crashes the upstream HM warnings block (calls `lib.versionAtLeast` on a null version). README updates: - Drop `targets.opencode.enable = true` from the registry-skills example. The darkmatter preset now installs OpenCode skills via `programs.opencode.skills`, and enabling the agent-skills opencode target would overlap with the preset's per-skill entries. - New OpenCode subsection documenting how skills land in OpenCode, the known third-party-source limitation, and the installPackage toggle. Lock bump for `darkmatter-agents` follows once the upstream PR lands. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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Summary
darkmatter.agentSkills.opencode.installPackage(defaulttrue). Whenfalse, skips Home Manager'spkgs.opencodeinstall — useful when opencode is managed via Homebrew or another channel. Config files and skills are still installed either way.targets.opencode.enable = truefrom the registry-skills example and adds a dedicated OpenCode subsection explaining how skills land there and what the current limitation is.Why the stub package
Setting
programs.opencode.package = nulldirectly crashes the upstream HM warnings block — it callslib.versionAtLeaston a null version (see agents PR #3 for context). Until upstream is fixed, the toggle substitutes an empty stub derivation with a version attr to satisfylib.getVersionwithout putting anopencodebinary on PATH.Pairs with
programs.opencode.*). Once that merges, runnix flake update darkmatter-agentshere to pick up the EACCES fix; this PR is independent and can land first or second.Test plan
nix evalconfirmsprograms.opencode.package.name == "opencode-1.14.48"wheninstallPackage = true.nix evalconfirmsprograms.opencode.package.name == "opencode-stub"(version 1.2.15) wheninstallPackage = false.opencode/opencode.json) and skill entries still present in both modes.home-manager switchon a host that usesdarkmatter.agentSkills.opencode.installPackage = falseand confirm no conflict with a brew-installed opencode.🤖 Generated with Claude Code