-
sof authored
Provide support for authors that want to distribute packages, by expanding occurrences of "${foo}" in an input package spec with the value of the 'foo' environment variable. This permits easy configuration at install-time, e.g., $ libdir=/opt/haskell/packages/lib ghc-pkg -a < NewPackage.pkg [Clearly, a separate preprocessing pass using some other tool could provide identical functionality. However, the benefits to the package author of not having to depend on such a tool being present on a user's box was considered more important. ]
5f67cbb7