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# An overlayed Nixpkgs for the Genode OS framework
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This repo contains Nix expressions for building Genode with Nixpkgs and building
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Nixpkgs for Genode. At the moment the former is experimental and broken in many
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cases, the later is probably broken for all cases.
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## Toolchain
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The LLVM cross-compiler may useful already, Clang apparently builds Genode
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without serious problems. Bootstrapping GCC is not feasible.
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To compiler environment may be accessed via the `nix-shell` utility and the
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`genode.base` attribute defined here.
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```sh
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nix-shell «path-to-this-repo» -A genode.base
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```
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Bootstrapping the environment on a laptop can take hours.
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## Continuous builds
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### C3D2 hydra
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Hardware for continuous builds provided by [Chaos Computer Club Dresden](https://c3d2.de/).
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The first hydra is located at https://hydra.hq.c3d2.de/project/genodepkgs.
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The following NixOS module will enable use of this Hydra as a cache:
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```nix
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{ ... }: {
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nix = {
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trustedUsers = [ «your-user» ];
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trustedBinaryCaches = [
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"https://nix-serve.hq.c3d2.de"
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];
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binaryCachePublicKeys = [
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"nix-serve.hq.c3d2.de:FEi9GyFkou1Ua8INaEKmuGaww9E5y3XwrNGNRfKYeLo="
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];
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};
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}
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```
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