#15912: Output hadrian build data for cabal-helper tool support -------------------------------------+------------------------------------- Reporter: davide | Owner: (none) Type: feature | Status: new request | Priority: normal | Milestone: 8.6.3 Component: Build System | Version: 8.6.2 (Hadrian) | Keywords: cabal-helper | Operating System: Unknown/Multiple hadrian tool support | Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- As a step in the direction of adding tool support for ghc development we can output some meta data from Hadrian to better support the cabal-helper tool. Proposed changes: 1. Add a <ghc-root>/cabal.helper file that points to the 3 stage build directories under the default Hadrian build dir: _build. 2. Add a "--cabal-helper" command line option to Hadrian that enables this output. 3. Output <build-root>/stage<x>/build.helper in JSON format containing per package: * .cabal file path relative to <ghc-root> (achieved by prefixing paths with $PROJECTDIR) e.g $PROJECTDIR/libraries/binary/binary.cabal * source path e.g. $PROJECTDIR/libraries/binary/binary.cabal * Build "dist directory", which is the directory containing the setup- config file generated by cabal on build. this is a relative path e.g. libraries/binary/setup-config ## TODO * decide on the naming of files ## Implementation * See: * Packages.ghcPackages * Hadrian.Package.pkgCabalFile -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15912 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler