diff options
| author | Eelco Dolstra <edolstra@gmail.com> | 2022-03-31 16:01:50 +0200 |
|---|---|---|
| committer | Eelco Dolstra <edolstra@gmail.com> | 2022-03-31 16:01:50 +0200 |
| commit | 4e043c2f32af3d3d49c53a2d06746e2fd6967836 (patch) | |
| tree | 5c7a82cb9defa14e47c2978d1bf7186f2b863184 /src/libstore/derivations.hh | |
| parent | d7fc33c8426768040b322a060b5a50433b3a78e6 (diff) | |
Document isPure()
Diffstat (limited to 'src/libstore/derivations.hh')
| -rw-r--r-- | src/libstore/derivations.hh | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/libstore/derivations.hh b/src/libstore/derivations.hh index b62e40786..98e59b64e 100644 --- a/src/libstore/derivations.hh +++ b/src/libstore/derivations.hh @@ -135,7 +135,10 @@ struct DerivationType : _DerivationTypeRaw { separately. Never true for non-CA derivations. */ bool needsNetworkAccess() const; - /* FIXME */ + /* Whether the derivation is expected to produce the same result + every time, and therefore it only needs to be built once. This + is only false for derivations that have the attribute '__impure + = true'. */ bool isPure() const; /* Does the derivation knows its own output paths? |