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Merge pull request #10312 from hercules-ci/add-build-dir

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Add build-dir setting
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Théophane Hufschmitt 2024-03-26 13:51:50 +01:00 • committed by GitHub
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4 changed files with 47 additions and 7 deletions
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4
src/libstore/build/local-derivation-goal.cc
View file

@ -488,7 +488,7 @@ void LocalDerivationGoal::startBuilder()
/* Create a temporary directory where the build will take
place. */
tmpDir = createTempDir("", "nix-build-" + std::string(drvPath.name()), false, false, 0700);
tmpDir = createTempDir(settings.buildDir.get().value_or(""), "nix-build-" + std::string(drvPath.name()), false, false, 0700);
chownToBuilder(tmpDir);
@ -2089,7 +2089,7 @@ void LocalDerivationGoal::runChild()
bool allowLocalNetworking = parsedDrv->getBoolAttr("__darwinAllowLocalNetworking");
/* The tmpDir in scope points at the temporary build directory for our derivation. Some packages try different mechanisms
to find temporary directories, so we want to open up a broader place for them to dump their files, if needed. */
to find temporary directories, so we want to open up a broader place for them to put their files, if needed. */
Path globalTmpDir = canonPath(defaultTempDir(), true);
/* They don't like trailing slashes on subpath directives */

30
src/libstore/globals.hh
View file

@ -687,16 +687,36 @@ public:
Setting<std::string> sandboxShmSize{
this, "50%", "sandbox-dev-shm-size",
R"(
This option determines the maximum size of the `tmpfs` filesystem
mounted on `/dev/shm` in Linux sandboxes. For the format, see the
description of the `size` option of `tmpfs` in mount(8). The default
is `50%`.
*Linux only*
This option determines the maximum size of the `tmpfs` filesystem
mounted on `/dev/shm` in Linux sandboxes. For the format, see the
description of the `size` option of `tmpfs` in mount(8). The default
is `50%`.
)"};
Setting<Path> sandboxBuildDir{this, "/build", "sandbox-build-dir",
"The build directory inside the sandbox."};
R"(
*Linux only*
The build directory inside the sandbox.
This directory is backed by [`build-dir`](#conf-build-dir) on the host.
)"};
#endif
Setting<std::optional<Path>> buildDir{this, std::nullopt, "build-dir",
R"(
The directory on the host, in which derivations' temporary build directories are created.
If not set, Nix will use the system temporary directory indicated by the `TMPDIR` environment variable.
Note that builds are often performed by the Nix daemon, so its `TMPDIR` is used, and not that of the Nix command line interface.
This is also the location where [`--keep-failed`](@docroot@/command-ref/opt-common.md#opt-keep-failed) leaves its files.
If Nix runs without sandbox, or if the platform does not support sandboxing with bind mounts (e.g. macOS), then the [`builder`](@docroot@/language/derivations.md#attr-builder)'s environment will contain this directory, instead of the virtual location [`sandbox-build-dir`](#conf-sandbox-build-dir).
)"};
Setting<PathSet> allowedImpureHostPrefixes{this, {}, "allowed-impure-host-deps",
"Which prefixes to allow derivations to ask for access to (primarily for Darwin)."};