simonmar 2005/11/04 07:48:26 PST
Modified files:
ghc/utils/ghc-pkg Main.hs
ghc/compiler/main Packages.lhs
ghc/compiler/utils Util.lhs
Log:
- Add support for the GHC_PACKAGE_PATH environment variable, which
specifies a :-separated (;-separated on Windows) list of package
database files. If the list ends in : (; on Windows), then the
normal user and global databases are added.
GHC_PACKAGE_PATH is searched left-to-right for packages, like
$PATH, but unlike -package-conf flags, which are searched
right-to-left. This isn't ideal, but it seemed the least worst to me
(command line flags always override right-to-left (except -i),
whereas the PATH environment variable overrides left-to-right, I chose
to follow the environment variable convention). I can always change
it if there's an outcry.
- Rationalise the interpretation of --user, --global, and -f on the
ghc-pkg command line. The story is now this: --user and --global
say which package database to *act upon*, they do not change the
shape of the database stack. -f pushes a database on the stack, and
also requests that the specified database be the one to act upon, for
commands that modify the database. If a database is already on the stack,
then -f just selects it as the one to act upon.
This means you can have a bunch of databases in GHC_PACKAGE_PATH, and
use -f to select the one to modify.
Revision Changes Path
1.80 +72 -23 fptools/ghc/utils/ghc-pkg/Main.hs
1.49 +27 -13 fptools/ghc/compiler/main/Packages.lhs
1.84 +35 -0 fptools/ghc/compiler/utils/Util.lhs
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