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Document mkOutputString

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John Ericson 2020-09-04 15:58:42 +00:00
parent e9fad3006b
commit 5aed6f9b25
1 changed files with 12 additions and 0 deletions
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src/libexpr/primops.cc
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@ -75,6 +75,18 @@ void EvalState::realiseContext(const PathSet & context)
} }
} }
/* Add and attribute to the given attribute map from the output name to
the output path, or a placeholder.
Where possible the path is used, but for floating CA derivations we
may not know it. For sake of determinism we always assume we don't
and instead put in a place holder. In either case, however, the
string context will contain the drv path and output name, so
downstream derivations will have the proper dependency, and in
addition, before building, the placeholder will be rewritten to be
the actual path.
The 'drv' and 'drvPath' outputs must correspond. */
static void mkOutputString(EvalState & state, Value & v, static void mkOutputString(EvalState & state, Value & v,
const StorePath & drvPath, const BasicDerivation & drv, const StorePath & drvPath, const BasicDerivation & drv,
std::pair<string, DerivationOutput> o) std::pair<string, DerivationOutput> o)