Add opencode to solve current build issue

pkgbuilds/opencode/PKGBUILD

@@ -0,0 +1,44 @@
+# Maintainer: dax
+# Maintainer: adam
+
+pkgname='opencode'
+pkgver=0.15.8
+options=('!debug' '!strip')
+pkgrel=1
+pkgdesc='The AI coding agent built for the terminal.'
+url='https://github.com/sst/opencode'
+arch=('aarch64' 'x86_64')
+license=('MIT')
+provides=('opencode')
+conflicts=('opencode-bin')
+depends=('fzf' 'ripgrep')
+makedepends=('git' 'bun-bin' 'go')
+
+source=("opencode-${pkgver}.tar.gz::https://github.com/sst/opencode/archive/v0.15.8.tar.gz")
+sha256sums=('SKIP')
+
+build() {
+  cd "opencode-${pkgver}"
+  bun install
+
+  # Fix for bun compile not finding platform-specific @parcel/watcher
+  # The compile step needs this to be explicitly installed
+  case "${CARCH}" in
+    x86_64)
+      bun add @parcel/watcher-linux-x64-glibc --optional
+      ;;
+    aarch64)
+      bun add @parcel/watcher-linux-arm64-glibc --optional
+      ;;
+  esac
+
+  cd packages/tui
+  CGO_ENABLED=0 go build -ldflags="-s -w -X main.Version=${pkgver}" -o tui cmd/opencode/main.go
+  cd ../opencode
+  bun build --define OPENCODE_TUI_PATH="'$(realpath ../tui/tui)'" --define OPENCODE_VERSION="'${pkgver}'" --compile --target=bun-linux-x64 --outfile=opencode ./src/index.ts
+}
+
+package() {
+  cd "opencode-${pkgver}/packages/opencode"
+  install -Dm755 ./opencode "${pkgdir}/usr/bin/opencode"
+}