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| author | Eelco Dolstra <eelco.dolstra@logicblox.com> | 2012-11-27T14·01+0100 |
|---|---|---|
| committer | Eelco Dolstra <eelco.dolstra@logicblox.com> | 2012-11-27T14·01+0100 |
| commit | 6c98e6a5dec2bcbc25ddeb2c279aa4a0b274bd6a (patch) | |
| tree | 2ef5df17cd5fc359c27f96adb3279deb791591a9 /src/libexpr/eval.hh | |
| parent | 8b8ee53bc73769bb25d967ba259dabc9b23e2e6f (diff) | |
Optionally ignore null-valued derivation attributes
This allows adding attributes like attr = if stdenv.system == "bla" then something else null; without changing the resulting derivation on non-<bla> platforms. We once considered adding a special "ignore" value for this purpose, but using null seems more elegant.
Diffstat (limited to 'src/libexpr/eval.hh')
| -rw-r--r-- | src/libexpr/eval.hh | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libexpr/eval.hh b/src/libexpr/eval.hh index 432a0bad1c6c..1d3baaab8f10 100644 --- a/src/libexpr/eval.hh +++ b/src/libexpr/eval.hh @@ -93,7 +93,7 @@ public: SymbolTable symbols; const Symbol sWith, sOutPath, sDrvPath, sType, sMeta, sName, - sSystem, sOverrides, sOutputName; + sSystem, sOverrides, sOutputName, sIgnoreNulls; /* If set, force copying files to the Nix store even if they already exist there. */ |