Use Cachix prebuilt binaries for F* - #4
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Downloading prebuilt binaries from github sometimes fails because of github API rates limit. This PRs makes use of cachix to download F* as well. See repo https://github.com/W95Psp/fstar-nix-versions, that populates cachix with pre-built F* versions. This also allows users to use any F* version, including pinning a commit.
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W95Psp
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July 16, 2025 09:32
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W95Psp
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July 16, 2025 13:19
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Downloading prebuilt binaries from github sometimes fails because of github API rates limit. This PRs makes use of cachix to download F* as well.
See repo https://github.com/W95Psp/fstar-nix-versions, that populates cachix with pre-built F* versions.
This also allows users to use any F* version, including pinning a commit.
This approach is sligthly slower than direct download: the F* binary is small, but the F* nix derivation ships a lot of things (e.g. the OCaml compiler! we end up with 400MB of data instead of 150 or something).
I think this is fine for now, I will push an PR to F* to make the derivation lighter for next versions.
EDIT: sizes I give up there are definitly wrong. The linux build of F* is already 500MB 🤔 not sure how big the nix packaged one is, but for sure it is bigger since it ship the OCaml compiler 😅