
#16253: Offer a shorthand for `--skip=_build/stage$n/compiler/.dependencies.mk` -------------------------------------+------------------------------------- Reporter: sgraf | Owner: (none) Type: task | Status: new Priority: normal | Milestone: Component: Build System | Version: 8.6.3 (Hadrian) | Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- When working on a stage1 compiler, the slightest change in any of the files leads to rebuilding the dependency matrix, which takes 20-30s time. That makes for a very disruptive edit-compile cycle. Alp helped me on #ghc and found `--skip=_build/stage0/compiler/.dependencies.mk` as the right flag to skip dependency rebuilding. I wonder if could hide that behind a nicer flag? I think this should do similar things as `--freeze1`, only that we 'freeze' stage 0 and dependency building. The analogy is that we need a hadrian equivalent of `make -C ghc 1` as we have `--freeze1` for `make -C ghc 2`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16253 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler