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Add trust-tarballs-from-git-forges setting

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If enabled, GitHub flakerefs don't require a content hash, a Git
revision is enough.

Fixes #10297.
This commit is contained in:
Eelco Dolstra 2024-03-27 14:49:45 +01:00
parent de101417eb
commit 46d9e70c20
2 changed files with 19 additions and 2 deletions
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17
src/libfetchers/fetch-settings.hh
View file

@ -78,7 +78,6 @@ struct FetchSettings : public Config
)", )",
{}, true, Xp::Flakes}; {}, true, Xp::Flakes};
Setting<bool> useRegistries{this, true, "use-registries", Setting<bool> useRegistries{this, true, "use-registries",
"Whether to use flake registries to resolve flake references.", "Whether to use flake registries to resolve flake references.",
{}, true, Xp::Flakes}; {}, true, Xp::Flakes};
@ -94,6 +93,22 @@ struct FetchSettings : public Config
empty, the summary is generated based on the action performed. empty, the summary is generated based on the action performed.
)", )",
{}, true, Xp::Flakes}; {}, true, Xp::Flakes};
Setting<bool> trustTarballsFromGitForges{
this, true, "trust-tarballs-from-git-forges",
R"(
If enabled (the default), Nix will consider tarballs from
GitHub and similar Git forges to be locked if a Git revision
is specified,
e.g. `github:NixOS/patchelf/7c2f768bf9601268a4e71c2ebe91e2011918a70f`.
This requires Nix to trust that the provider will return the
correct contents for the specified Git revision.
If disabled, such tarballs are only considered locked if a
`narHash` attribute is specified,
e.g. `github:NixOS/patchelf/7c2f768bf9601268a4e71c2ebe91e2011918a70f?narHash=sha256-PPXqKY2hJng4DBVE0I4xshv/vGLUskL7jl53roB8UdU%3D`.
)"};
}; };
// FIXME: don't use a global variable. // FIXME: don't use a global variable.

4
src/libfetchers/github.cc
View file

@ -294,7 +294,9 @@ struct GitArchiveInputScheme : InputScheme
Git revision alone, we also require a NAR hash for Git revision alone, we also require a NAR hash for
locking. FIXME: in the future, we may want to require a Git locking. FIXME: in the future, we may want to require a Git
tree hash instead of a NAR hash. */ tree hash instead of a NAR hash. */
return input.getRev().has_value() && input.getNarHash().has_value(); return input.getRev().has_value()
&& (fetchSettings.trustTarballsFromGitForges ||
input.getNarHash().has_value());
} }
std::optional<ExperimentalFeature> experimentalFeature() const override std::optional<ExperimentalFeature> experimentalFeature() const override