Merge pull request #6259 from Artturin/nixbuildaddprintstorepaths

nix build: add --print-out-paths flag
This commit is contained in:
Théophane Hufschmitt 2022-04-22 14:21:55 +02:00 committed by GitHub
commit 7f814d6d9a
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4 changed files with 42 additions and 0 deletions

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@ -6,3 +6,6 @@
* The path produced by `builtins.toFile` is now allowed to be imported or read
even with restricted evaluation. Note that this will not work with a
read-only store.
* `nix build` has a new `--print-out-paths` flag to print the resulting output paths.
This matches the default behaviour of `nix-build`.

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@ -4,6 +4,7 @@
#include "shared.hh"
#include "store-api.hh"
#include "local-fs-store.hh"
#include "progress-bar.hh"
#include <nlohmann/json.hpp>
@ -12,6 +13,7 @@ using namespace nix;
struct CmdBuild : InstallablesCommand, MixDryRun, MixJSON, MixProfile
{
Path outLink = "result";
bool printOutputPaths = false;
BuildMode buildMode = bmNormal;
CmdBuild()
@ -31,6 +33,12 @@ struct CmdBuild : InstallablesCommand, MixDryRun, MixJSON, MixProfile
.handler = {&outLink, Path("")},
});
addFlag({
.longName = "print-out-paths",
.description = "Print the resulting output paths",
.handler = {&printOutputPaths, true},
});
addFlag({
.longName = "rebuild",
.description = "Rebuild an already built package and compare the result to the existing store paths.",
@ -93,6 +101,22 @@ struct CmdBuild : InstallablesCommand, MixDryRun, MixJSON, MixProfile
}, buildable.raw());
}
if (printOutputPaths) {
stopProgressBar();
for (auto & buildable : buildables) {
std::visit(overloaded {
[&](const BuiltPath::Opaque & bo) {
std::cout << store->printStorePath(bo.path) << std::endl;
},
[&](const BuiltPath::Built & bfd) {
for (auto & output : bfd.outputs) {
std::cout << store->printStorePath(output.second) << std::endl;
}
},
}, buildable.raw());
}
}
updateProfile(buildables);
}
};

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@ -25,6 +25,13 @@ R""(
lrwxrwxrwx 1 … result-1 -> /nix/store/rkfrm0z6x6jmi7d3gsmma4j53h15mg33-cowsay-3.03+dfsg2
```
* Build GNU Hello and print the resulting store path.
```console
# nix build nixpkgs#hello --print-out-paths
/nix/store/v5sv61sszx301i0x6xysaqzla09nksnd-hello-2.10
```
* Build a specific output:
```console

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@ -34,6 +34,14 @@ outPath=$(readlink -f $TEST_ROOT/result)
grep 'FOO BAR BAZ' $TEST_ROOT/machine0/$outPath
testPrintOutPath=$(nix build -L -v -f $file --print-out-paths --max-jobs 0 \
--arg busybox $busybox \
--store $TEST_ROOT/machine0 \
--builders "$(join_by '; ' "${builders[@]}")"
)
[[ $testPrintOutPath =~ store.*build-remote ]]
set -o pipefail
# Ensure that input1 was built on store1 due to the required feature.