https://github.com/obsidiansystems/sandstone

Fine-grained Haskell builds with Nix's dynamic derivations
https://github.com/obsidiansystems/sandstone

Last synced: 14 days ago
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Fine-grained Haskell builds with Nix's dynamic derivations

• Host: GitHub
• URL: https://github.com/obsidiansystems/sandstone
• Owner: obsidiansystems
• License: other
• Created: 2025-03-01T02:23:05.000Z (3 months ago)
• Default Branch: master
• Last Pushed: 2025-03-16T16:49:53.000Z (2 months ago)
• Last Synced: 2025-04-04T22:01:49.798Z (about 2 months ago)
• Language: Haskell
• Size: 3.54 MB
• Stars: 33
• Watchers: 4
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

        


# Sandstone

> [!IMPORTANT]

> This is currently a work in progress.

> It is not ready to be used outside of dogfooding by developers of Sandstone itself.

Fine-grained Haskell builds with Nix's dynamic derivations.

Current demo:

```bash

"/tmp/sand/$( \

  /nix/store/5816ss5q8d8mpigj5wl0fp078dh2sy7j-nix-2.27.0pre19700101_dirty/bin/nix build \

  -L \

  --store /tmp/sand \

  --substituters 'http://cache.nixos.org' \

  --extra-experimental-features 'ca-derivations dynamic-derivations recursive-nix nix-command' \

  -f . dyn-drvs-test-res \

  --build-cores 20 -v --print-out-paths)"

```

(This is using the [pinned `nix`](./default.nix).)

Methodology:

- GHC's [ability to dump makefiles](https://downloads.haskell.org/ghc/latest/docs/users_guide/separate_compilation.html#dependency-generation)

- Nix's [dynamic derivations](https://nix.dev/manual/nix/latest/development/experimental-features#xp-feature-dynamic-derivations)