This project is mirrored from https://github.com/haskell/Cabal. Pull mirroring updated .
  1. 13 Feb, 2016 2 commits
  2. 30 Jan, 2016 1 commit
  3. 25 Jan, 2016 1 commit
  4. 16 Jan, 2016 1 commit
    • Edward Z. Yang's avatar
      Distinguish between component ID and unit ID. · ef41f44e
      Edward Z. Yang authored
      
      
      GHC 8.0 is switching the state sponsored way to specify
      linker names from -this-package-key to -this-unit-id, so
      it behooves us to use the right one.  But it didn't make
      much sense to pass ComponentIds to a flag named UnitId,
      so I went ahead and finished a (planned) refactoring
      to distinguish ComponentIds from UnitIds.
      
      At the moment, there is NO difference between a ComponentId
      and a UnitId; they are identical.  But semantically, a
      component ID records what sources/flags we chose (giving us enough
      information to typecheck a package), whereas a unit ID records
      the component ID as well as how holes were instantiated
      (giving us enough information to build it.)  MOST code
      in the Cabal library wants unit IDs, but there are a few
      places (macros and configuration) where we really do
      want a component ID.
      
      Some other refactorings that got caught up in here:
      
          - Changed the type of componentCompatPackageKey to String, reflecting the
            fact that it's not truly a UnitId or ComponentId.
      
          - Changed the behavior of CURRENT_PACKAGE_KEY to unconditionally
            give the compatibility package key, which is actually what you
            want if you're using it for the template Haskell trick.  I also
            added a CURRENT_COMPONENT_ID macro for the actual component ID,
            which is something that the Cabal test-suite will find useful.
      
          - Added the correct feature test for GHC 8.0 ("Uses unit IDs").
      Signed-off-by: default avatarEdward Z. Yang <ezyang@cs.stanford.edu>
      ef41f44e
  5. 08 Jan, 2016 1 commit
    • Edward Z. Yang's avatar
      Remove same-package import lists, fixes #2835. · 639cd007
      Edward Z. Yang authored
      
      
      Instead of qualifying, in some cases I just added an extra
      'hiding' pragma to squelch errors.  Common conflicts
      (just grep for hiding):
      
          - Flag
              - Distribution.Simple.Compiler
              - Distribution.PackageDescription
              - Distribution.Simple.Setup
          - installedComponentId
              - Distribution.Package
              - Distribution.InstalledPackageInfo
          - doesFileExist
              - Distribution.PackageDescription.Check
          - instantiatedWith
              - I renamed the field in InstalledPackageInfo.  But
                it's probably going away with Backpack bits; I
                migth just excise it soon.
          - absoluteInstallDirs and substPathTemplate
              - Distribution.Simple.InstallDirs
              - Distribution.Simple.LocalBuildInfo
      
      I fixed some shadowing errors by renaming local variables in some cases.
      Common shadowings (we should perhaps consider not using these as
      method/field names):
      
          - freeVars
          - components
          - noVersion
          - verbosity
          - get
          - description
          - name
      
      Some data structures were moved around (IPIConvert and ABIHash)
      to make it easier to handle import lists.
      
      Some functions in Utils could be turned into reexports of standard
      library functions.
      
      No explicit imports were removed from non-Cabal imports.  These
      imports help maintain warning cleanliness across versions of GHC,
      so I don't recommend removing them.
      Signed-off-by: default avatarEdward Z. Yang <ezyang@cs.stanford.edu>
      639cd007
  6. 09 Oct, 2015 1 commit
    • Edward Z. Yang's avatar
      Implement ComponentId, replacing PackageKey and InstalledPackageId. · b083151f
      Edward Z. Yang authored
      
      
      Today in Cabal, when you build and install a package, it is
      uniquely identified using an InstalledPackageId which is computed
      using the ABI hash of the library that was installed.  There
      are few problems with doing it this way:
      
          - In a Nix-like world, we should instead uniquely identify
            build products by some sort of hash on the inputs to the
            compilation (source files, dependencies, flags).  The ABI
            hash doesn't capture any of this!
      
          - An InstalledPackageId suggests that we can uniquely identify
            build products by hashing the source and dependencies of
            a package as a whole.  But Cabal packages contain many components:
            a library, test suite, executables, etc.  Currently, when
            we say InstalledPackageId, we are really just talking about
            the dependencies of the library; however, this is unacceptable
            if a Cabal package can install multiple libraries; we need
            different identifiers for each.
      
          - We've also needed to compute another ID, which we've called
            the "package key", which is to be used for linker symbols
            and type equality GHC-side.  It is confusing what the distinction
            between this ID and InstalledPackageIds are; the main reason
            we needed another ID was because the package key was needed
            prior to compilation, whereas the ABI hash was only available
            afterwards.
      
      This patch replaces InstalledPackageId and PackageKey with a
      new identifier called ComponentId, which has the following
      properties:
      
          - It is computed per-component, and consists of a package
            name, package version, hash of the ComponentIds
            of the dependencies it is built against, and the name
            of the component.  For example, "foo-0.1-abcdef" continues
            to identify the library of package foo-0.1, but
            "foo-0.1-123455-foo.exe" would identify the executable,
            and "foo-0.1-abcdef-bar" would identify a private sub-library
            named bar.
      
          - It is passed to GHC to be used for linker symbols and
            type equality.  So as far as GHC is concerned, this is
            the end-all be-all identifier.
      
          - Cabal the library has a simple, default routine for computing
            a ComponentId which DOES NOT hash source code;
            in a later patch Duncan is working on, cabal-install can
            specify a more detailed ComponentId for a package
            to be built with.
      
      Here are some knock-on effects:
      
          - 'id' is a ComponentId
      
          - 'depends' is now a list of ComponentIds
      
          - New 'abi' field to record what the ABI of a unit is (as it is no longer
            computed by looking at the output of ghc --abi-hash).
      
          - The 'HasInstalledPackageId' typeclass is renamed to
            'HasComponentId'.
      
          - GHC 7.10 has explicit compatibility handling with
            a 'compatPackageKey' (an 'ComponentId') which is
            in a compatible format.  The value of this is read out
            from the 'key' field.
      Signed-off-by: default avatarEdward Z. Yang <ezyang@cs.stanford.edu>
      b083151f
  7. 21 Jul, 2015 1 commit
    • Edward Z. Yang's avatar
      Refactor Cabal around the idea of "library names". · f47732a5
      Edward Z. Yang authored
      
      
      In GHC 7.10, Cabal always generate package keys, including in
      cases where Backpack was involved (e.g. --instantiated-with).
      In fact, in these case, GHC needs to be able to generate the
      package key (because it will often make a substitution on the
      instantiation, and needs to know if this identity coincides with
      anything else we've seen previously).
      
      Thus, we introduce a new notion, the 'LibraryName', which
      is JUST the non-Backpack portion of a package key.  For ordinary
      packages that are definite, a 'LibraryName' is simply
      the 'PackageId' plus 'PackageKey'; for indefinite Backpack packages,
      when a package gets instantiatied, it may end up with different
      'PackageKey's even though the 'LibraryName' stays the same.
      'LibraryName's can be computed purely by Cabal.
      
      This patch:
      
          - Defines library name, which are the source package ID plus
            a hash of all the source package ID and the library names of external,
            textual dependencies,
      
          - Redefines the package key to be JUST the hash portion of a
            library name, in the case that Backpack is not used,
      
          - Records the library name in InstalledPackageInfo.
      
      Note: the source package ID is included both externally (so the library
      name is a useful handle to refer to package) and internally (so the
      hash can stand alone as the package key.)
      
      A major refactoring which is part of this commit is moving package keys/library
      names from LocalBuildInfo to LibComponentBuildInfo.  If you have an LBI, you can
      still extract a package key/library name using the new
      localPackageKey/localLibraryName function (which looks through the
      ComponentBuildInfos of a LocalBuildInfo for the library in question).  This is
      conceptually cleaner for two reasons:
      
          1. Only dependencies of the *library* are counted as part
          of the library name, as opposed to *all* dependencies which
          we previously used.
      
          2. A library name doesn't really mean much for an executable,
          or a test suite, since no one else will have to link against
          them.  So we can fall back on something simpler.
      
      A more minor refactoring is the 'LibraryName' type, which was
      previously defined by LocalBuildInfo and generally looked something
      like "HSprocess-0.1-XXXX".  We change the meaning of 'LibraryName'
      to be "process-0.1-XXXX" (thus we have to insert some HS additions
      in the code) and eliminate componentLibraries, thus assuming that
      there is only ONE Haskell library (which was the case.)  So
      we remove a little bit of generality and in return get code
      that is much easier to read.  (The only downside is GHC's hack
      to split DLLs into multiples has to be adjusted slightly, but
      this is not a big price to pay.)
      Signed-off-by: default avatarEdward Z. Yang <ezyang@cs.stanford.edu>
      f47732a5
  8. 19 Oct, 2014 1 commit
  9. 02 Feb, 2014 1 commit
  10. 15 Mar, 2013 1 commit
  11. 12 Mar, 2013 1 commit
  12. 23 Oct, 2011 1 commit
  13. 19 Jun, 2011 1 commit
  14. 07 Jul, 2009 1 commit
  15. 09 Dec, 2008 1 commit
  16. 11 Aug, 2008 1 commit
    • Simon Marlow's avatar
      Add auto-generated CPP macros for package version testing · 2ee2c870
      Simon Marlow authored
      Now when using CPP you get 
      
         MIN_VERSION_<package>(A,B,C)
      
      for each <package> in build-depends, which is true if the version of
      <package> in use is >= A.B.C, using the normal ordering on version
      numbers.
      
      This is done by auto-generating a header file
      dist/build/autogen/cabal_macros.h, and passing a -include flag when
      running CPP.
      2ee2c870
  17. 28 Jun, 2008 1 commit
    • Duncan Coutts's avatar
      Update module headers · 0c993c84
      Duncan Coutts authored
      Use cabal-devel@haskell.org as the maintainer in most cases except for
      a few which were pre-existing modules copied from elsewhere or modules
      like L.H.Extension which really belong to libraries@haskell.org
      Remove the useless stability module. We have more detailed information
      on stability elsewhere (in the version number and user guide).
      Add more top level module documentation, taken from the source guide.
      0c993c84
  18. 26 Jun, 2008 2 commits
  19. 14 Jun, 2008 1 commit
  20. 11 May, 2008 1 commit
  21. 09 Apr, 2008 1 commit
  22. 07 Apr, 2008 1 commit
    • Duncan Coutts's avatar
      Fix names of profiling libs · bd530c9f
      Duncan Coutts authored
      I broke this recently when refactoring. Restore the original behaviour.
      Was generating "libHSfoo_p-1.0.a" when it should be "libHSfoo-1.0_p.a".
      bd530c9f
  23. 21 Mar, 2008 3 commits
  24. 17 Mar, 2008 1 commit
    • Duncan Coutts's avatar
      Change mkLibName and friends to take a package id and not take the dir · 5c86f87a
      Duncan Coutts authored
      So now it really gives just the lib name and not its location as well.
      It turned out that we more often want just the name since we're copying
      the same named file from one directory to another.
      Taking a PackageIdentifier means we do the conversion to string in one
      place rather than all over the place.
      It also means we're chaning the lib names for nhc98 to include the lib
      version number. This should not make any real difference to nhc98.
      5c86f87a
  25. 12 Mar, 2008 1 commit
  26. 07 Mar, 2008 1 commit
  27. 04 Mar, 2008 1 commit
  28. 22 Feb, 2008 1 commit
  29. 05 Feb, 2008 1 commit