Commits on Jan 20, 2024

1. pkgs/stdenv/linux: update riscv64 bootstrap-files …

   This PR updates the bootstrap tarballs for riscv64-linux with new Hydra-generated ones.
   
   Fixes NixOS#275848 (bootstrap assembler too old to build gcc 13).
   
   I'll be following the script used in NixOS#151399, NixOS#168199, NixOS#183487, and NixOS#188334.
   
   Files came from [this](https://hydra.nixos.org/build/246376732#tabs-summary) Hydra build, which used nixpkgs revision 160cedc to instantiate:
   
   ```
   /nix/store/cpiajh4l83b08pynwiwkpxj53d78pcxr-stdenv-bootstrap-tools-riscv64-unknown-linux-gnu.drv
   ```
   
   and then built:
   
   ```
   /nix/store/8a92pj40awdw585mcb9dvm4nyb03k3q3-stdenv-bootstrap-tools-riscv64-unknown-linux-gnu
   ```
   
   I downloaded these files from Hydra and prefetched them into the nix store with the following commands:
   
   ```
   STOREPATH=8a92pj40awdw585mcb9dvm4nyb03k3q3-stdenv-bootstrap-tools-riscv64-unknown-linux-gnu
   OPTIONS="--option binary-caches https://cache.nixos.org --option trusted-public-keys cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
   nix store prefetch-file \
     file://$(nix store add-file --name bootstrap-tools.tar.xz  $(nix-store ${OPTIONS} -r /nix/store/${STOREPATH})/on-server/bootstrap-tools.tar.xz)
   nix store prefetch-file --executable \
     file://$(nix store add-path --name busybox $(nix-store ${OPTIONS} -r /nix/store/${STOREPATH})/on-server/busybox)
   ```
   
   These commands produced the following output:
   
   ```
   Downloaded 'file:///nix/store/xs74wcxq3qc12plfc70fds8inbndhcfm-bootstrap-tools.tar.xz' to '/nix/store/3fal4gikp92013kac6rdmfbrch2s859b-xs74wcxq3qc12plfc70fds8inbndhcfm-bootstrap-tools.tar.xz' (hash 'sha256-0LxRd7fdafQezNJ+N2tuOfm0KEwgfRSts5fhP0e0r0s=').
   Downloaded 'file:///nix/store/9ndpna6jrlac4y9fappdjm0sxx0g2bja-busybox' to '/nix/store/kb7wyy30y1gxcmdajljr26kxxac606qa-9ndpna6jrlac4y9fappdjm0sxx0g2bja-busybox' (hash 'sha256-OGO96QUzs2n5pGipn/V87AxzUY9OWKZl417nE8HdZIE=').
   ```
   
   I used the hashes from the output above to create the `fetchurl` invocation which is part of this commit.
   
   I then started the bootstrap with the following command:
   
   ```
   nix build -L -f . --arg localSystem '(import ./lib).systems.examples.riscv64' hello
   ```
   
   As @lovesegfault requested, here are the the `sha256sum`s of all the `on-server` components for extra verification:
   
   ```
   sha256sum /nix/store/${STOREPATH}/on-server/*
   ```
   
   which produced the following output:
   
   ```
   d0bc5177b7dd69f41eccd27e376b6e39f9b4284c207d14adb397e13f47b4af4b  /nix/store/8a92pj40awdw585mcb9dvm4nyb03k3q3-stdenv-bootstrap-tools-riscv64-unknown-linux-gnu/on-server/bootstrap-tools.tar.xz
   65f9433abb598f63c932d33351b14f686551512b1cece1e64c2d0e76aa0ec52e  /nix/store/8a92pj40awdw585mcb9dvm4nyb03k3q3-stdenv-bootstrap-tools-riscv64-unknown-linux-gnu/on-server/busybox
   ```

   

   fgaz committed Jan 20, 2024
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