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nixos/binfmt: handle wasm binaries

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This adds handling for WASM binaries to binfmt’s emulatedSystems. To
enable, add this to your configuration:

  boot.binfmt.emulatedSystems = [ "wasm32-wasi" ];

After rebuilding with nixos-rebuild switch, you can run wasm binaries
directly.
This commit is contained in:
Matthew Bauer 2019-07-17 17:00:46 -04:00
parent 31c38894c9
commit 1acc701fdb
1 changed files with 8 additions and 0 deletions
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8
nixos/modules/system/boot/binfmt.nix
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@ -115,6 +115,14 @@ let
magicOrExtension = ''\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xf3\x00'';
mask = ''\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff'';
};
wasm32-wasi = {
magicOrExtension = ''\x00asm'';
mask = ''\xff\xff\xff\xff'';
};
wasm64-wasi = {
magicOrExtension = ''\x00asm'';
mask = ''\xff\xff\xff\xff'';
};
x86_64-windows = {
magicOrExtension = ".exe";
recognitionType = "extension";