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Shea Levy d1662d7155 Add the replace-dependency build support function.

The use case is to do a deep replacement of a dependency without rebuilding the entire tree.
For example, suppose a security hole is found in glibc and a patch released. Ideally, you'd
just rebuild everything, but that takes time, space, and CPU that you might not have, so in
the mean time you could build a safe version of, say, firefox with:

  firefox-safe = replace-dependency { drv = firefox; old-dependency = glibc; new-dependency = patched-glibc; };

Building firefox-safe will rebuild glibc, but only do a simple copy/string replacement on all other dependencies
of firefox. On my system (MBP 13" mid-2012), after a new glibc had been build building firefox took around 11 seconds.

See the comments in the file for more details.

2013-01-11 14:42:09 -05:00

doc

Document that Java packages should install JARs in $out/lib/java

2012-11-08 16:31:08 +01:00

maintainers

Remove support for the obsolete powerpc-darwin and i686-darwin platforms

2012-11-29 14:10:49 +01:00

pkgs

Add the replace-dependency build support function.

2013-01-11 14:42:09 -05:00

.gitignore

Tell git to ignore .*.swp - Vim swap files