diff options
| author | Eelco Dolstra <e.dolstra@tudelft.nl> | 2005-02-11 16:56:45 +0000 |
|---|---|---|
| committer | Eelco Dolstra <e.dolstra@tudelft.nl> | 2005-02-11 16:56:45 +0000 |
| commit | 20ce2642fc0052a9f70faf194cc0c31d3f88926e (patch) | |
| tree | 6c578e87f0453af0522ae97a749e66b40f952669 /src/libutil/util.hh | |
| parent | 80870d9291813f265a6e078c92aa535ef0b70a47 (diff) | |
* 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).
Diffstat (limited to 'src/libutil/util.hh')
| -rw-r--r-- | src/libutil/util.hh | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/libutil/util.hh b/src/libutil/util.hh index b67913862..2577f79e1 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<class T, class A> +T singleton(const A & a) +{ + T t; + t.insert(a); + return t; +} + /* Messages. */ |