aboutsummaryrefslogtreecommitdiff
path: root/src/libstore/downstream-placeholder.cc
blob: 1752738f2fd7dc817916f9696e38e7c1e976926c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
#include "downstream-placeholder.hh"
#include "derivations.hh"

namespace nix {

std::string DownstreamPlaceholder::render() const
{
    return "/" + hash.to_string(Base32, false);
}


DownstreamPlaceholder DownstreamPlaceholder::unknownCaOutput(
    const StorePath & drvPath,
    std::string_view outputName)
{
    auto drvNameWithExtension = drvPath.name();
    auto drvName = drvNameWithExtension.substr(0, drvNameWithExtension.size() - 4);
    auto clearText = "nix-upstream-output:" + std::string { drvPath.hashPart() } + ":" + outputPathName(drvName, outputName);
    return DownstreamPlaceholder {
        hashString(htSHA256, clearText)
    };
}

DownstreamPlaceholder DownstreamPlaceholder::unknownDerivation(
    const DownstreamPlaceholder & placeholder,
    std::string_view outputName,
    const ExperimentalFeatureSettings & xpSettings)
{
    xpSettings.require(Xp::DynamicDerivations);
    auto compressed = compressHash(placeholder.hash, 20);
    auto clearText = "nix-computed-output:"
        + compressed.to_string(Base32, false)
        + ":" + std::string { outputName };
    return DownstreamPlaceholder {
        hashString(htSHA256, clearText)
    };
}

}