download all derivations via one nix build call
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| lines = b.filter (x: x != [] && x != "") (b.split "\n" text); | ||
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| # load a .drv file so that the evaluator accepts it as derivation | ||
| loadDrv = drvFile: |
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I believe builtins.import drvFile should just as well for your purposes and is less hacky.
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@sternenseemann I've wanted to do marsnix again but implement it in pure Nix using RFC92.
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@DavHau may have written it this way to work around a bug in cppnix.
I believe
builtins.import drvFileshould just as well for your purposes and is less hacky.
It probably should. However when I tried replacing loadDrv with builtins.import I managed to crash nix-daemon!
2023-11-21_00:25:38.46594 nix-daemon: src/libstore/derivations.cc:730: static std::string_view nix::BasicDerivation::nameFromPath(const nix::StorePath&): Assertion `hasSuffix(nameWithSuffix, extension)' failed.
Note that the assertion is occurring in nix-daemon, not nix-build; eval succeeds.
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