olm/flake.nix

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{
description = "An implementation of the Double Ratchet cryptographic ratchet";
inputs.nixpkgs.url = "nixpkgs/c777cdf5c564015d5f63b09cc93bef4178b19b01";
# c777cdf5c564015d5f63b09cc93bef4178b19b01 is current unstable. We can't use
# the current stable release because of
# https://github.com/emscripten-core/emscripten/issues/14995
inputs.flake-utils.url = "github:numtide/flake-utils";
inputs.npmlock2nix = {
url = "github:nix-community/npmlock2nix";
flake = false;
};
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outputs = { self, nixpkgs, flake-utils, npmlock2nix }:
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(
flake-utils.lib.eachDefaultSystem (system:
let
pkgs = import nixpkgs {
inherit system;
overlays = [
(final: prev: {
npmlock2nix = final.callPackage npmlock2nix {};
})
];
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};
node_modules = pkgs.npmlock2nix.node_modules { src = ./javascript; };
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in
rec {
packages.javascript = pkgs.buildEmscriptenPackage {
name = "olm";
buildInputs = [ pkgs.gnumake pkgs.python3 pkgs.yarn ];
src = ./.;
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postPatch = ''
patchShebangs .
'';
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configurePhase = "";
buildPhase = ''
export EM_CACHE=$TMPDIR
make javascript/exported_functions.json
make js
'';
output = [ "out" ];
installPhase = ''
mkdir -p $out/javascript
cd javascript
echo sha256: > checksums.txt
sha256sum olm.js olm_legacy.js olm.wasm >> checksums.txt
echo sha512: >> checksums.txt
sha512sum olm.js olm_legacy.js olm.wasm >> checksums.txt
cp package.json olm.js olm.wasm olm_legacy.js index.d.ts README.md checksums.txt $out/javascript
cd ..
'';
checkPhase = ''
cd javascript
export HOME=$TMPDIR
ln -s ${node_modules}/node_modules ./node_modules
${pkgs.nodejs}/bin/npm test
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cd ..
'';
};
defaultPackage = packages.javascript;
}
)
);
}