Build GraphcodeKit, the CLI, and graphcoded on Linux (#83) - #110
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Adds a root Package.swift so the non-UI products build with SwiftPM on Linux, guards the Darwin-only code paths (openpty, sun_len, SOCK_STREAM, launchd bootstrap), and adds a Linux CI workflow as the portability gate. The macOS app keeps building through Tuist, which resolves its dependencies from Tuist/Package.swift and ignores the root manifest. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
posix_openpt/grantpt/unlockpt/ptsname never make it through Swift's Glibc module (stdlib.h feature-macro guards), while pty.h — and with glibc >= 2.34 libc itself — provides openpty on both platforms. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Summary
First concrete step toward #83 (Add linux version): the three non-UI products —
GraphcodeKit,graphcode(CLI), andgraphcoded(daemon) — now build on Linux, gated by CI.Package.swift: a SwiftPM manifest for the non-UI targets, so they build anywhere swift-corelibs Foundation runs. Tuist keeps resolving the app's dependencies fromTuist/Package.swiftand ignores the root manifest (verified:tuist installstill succeeds). Targets stay in Swift language mode 5 to match how Tuist builds these same sources today.PTYProcessSession:openptyis Darwin/libutil; on Linux the PTY is opened with the POSIXposix_openpt/grantpt/unlockpt/ptsnamesequence instead.DaemonSocketClient+graphcoded/main.swift:sockaddr_un.sun_lendoesn't exist on Linux;SOCK_STREAMimports as the__socket_typeenum there;timeval.tv_usecissuseconds_ton both.FramedMessageIO:import Glibcfallback forread/write/errno.DaemonBootstrap: launchd/quarantine-xattr install flow, only called by the macOS app — gated#if os(macOS). A Linux install story would be a systemd user unit, out of scope here..github/workflows/linux.yml: builds with theswift:6.2container and smoke-runs the CLI — the portability gate for this and future changes.What this does NOT cover
graphcodeapp (SwiftUI + GhosttyKit + Carbon) — a Linux UI is a much larger separate effort.zmx(Zig, inThirdParty/) cross-compiles in principle but isn't wired into Linux CI.Test plan
swift buildpasses on macOS; SwiftPM-builtgraphcodeprints usage and exits 0tuist installstill resolves (root manifest doesn't confuse Tuist)Closes nothing on its own — #83 stays open for the app story; findings documented there.
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