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Ramon Roche
a6d1822521
Homebrew 4.5 (April 2026) stopped auto-tapping cross-tap dependencies declared in formulae, as a security + performance change. The px4-dev meta-formula pulled in packages from osx-cross/arm, PX4/px4, and discoteq/discoteq, so 'brew install px4-dev' now aborts before any real work unless every tap has been added explicitly. On macos-latest CI runners the chain broke at the first unreachable dep (discoteq/discoteq/flock) and subsequent make steps failed with 'ccache: command not found'. Since Tools/setup/macos.sh is the canonical install path and already tapped osx-cross/arm and PX4/px4 before calling brew install, the simplest fix is to inline the package list and call brew install directly. The px4-dev meta-formula will be kept upstream as a deprecated no-op so older copies of macos.sh on long-lived branches and cached Docker images keep working. The inlined package list is the same set px4-dev depended on, minus the dead-weight flock dependency that hadn't been invoked in the PX4 build since the NuttX 9.1.x era. See the accompanying PX4/homebrew-px4 PR for formula changes. Docs updated to match: docs/en/dev_setup/dev_env_mac.md no longer names the px4-dev formula, describes the package list directly. Verified locally on macOS ARM64: - ./Tools/setup/macos.sh runs to completion with both taps and all 13 packages resolving correctly - make distclean && make px4_fmu-v6x_default builds successfully (1250/1250 ninja steps, 1930096 B FLASH used) Signed-off-by: Ramon Roche <mrpollo@gmail.com>