From 20ce2642fc0052a9f70faf194cc0c31d3f88926e Mon Sep 17 00:00:00 2001 From: Eelco Dolstra Date: Fri, 11 Feb 2005 16:56:45 +0000 Subject: * Refactoring to support different installation sources in nix-env. * Set the references for the user environment manifest properly. * Don't copy the manifest (this was accidental). * Don't store derivation paths in the manifest (maybe this should be made optional). This cleans up the semantics of nix-env, which were weird. * Hash on the output paths of activated components, not on derivation paths. This is because we don't know the derivation path of already installed components anymore, and it allows the installation of components by store path (skipping Nix expressions entirely). * Query options `--out-path' and `--drv-path' to show the output and derivation paths of components, respectively (the latter replaces the `--expr' query). --- src/libutil/util.hh | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'src/libutil') diff --git a/src/libutil/util.hh b/src/libutil/util.hh index b67913862408..2577f79e1b87 100644 --- a/src/libutil/util.hh +++ b/src/libutil/util.hh @@ -112,6 +112,14 @@ Path createTempDir(); not already exist. */ void writeStringToFile(const Path & path, const string & s); +template +T singleton(const A & a) +{ + T t; + t.insert(a); + return t; +} + /* Messages. */ -- cgit 1.4.1