about summary refs log tree commit diff
path: root/pkgs/applications/blockchains/polkadot/default.nix
blob: 23e75c0e894f521c70a758b4db4eaccb5275605e (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
{ clang
, fetchFromGitHub
, lib
, llvmPackages
, protobuf
, rocksdb
, rustPlatform
, stdenv
, writeShellScriptBin
, Security
, SystemConfiguration
}:
rustPlatform.buildRustPackage rec {
  pname = "polkadot";
  version = "0.9.39-1";

  src = fetchFromGitHub {
    owner = "paritytech";
    repo = "polkadot";
    rev = "v${version}";
    hash = "sha256-Hr3VFqfoBW7VGc7FXLxeCtZDLRMM+jITgR8LGA5uEP8=";

    # the build process of polkadot requires a .git folder in order to determine
    # the git commit hash that is being built and add it to the version string.
    # since having a .git folder introduces reproducibility issues to the nix
    # build, we check the git commit hash after fetching the source and save it
    # into a .git_commit file, and then delete the .git folder. we can then use
    # this file to populate an environment variable with the commit hash, which
    # is picked up by polkadot's build process.
    leaveDotGit = true;
    postFetch = ''
      ( cd $out; git rev-parse --short HEAD > .git_commit )
      rm -rf $out/.git
    '';
  };

  cargoHash = "sha256-gLU/3wHiSpOA7oQwmy7v5s3PiAtElJv4EwLqdOyKhds=";

  buildInputs = lib.optionals stdenv.isDarwin [ Security SystemConfiguration ];

  nativeBuildInputs = [ rustPlatform.bindgenHook ];

  preBuild = ''
    export SUBSTRATE_CLI_GIT_COMMIT_HASH=$(cat .git_commit)
    rm .git_commit
  '';

  PROTOC = "${protobuf}/bin/protoc";
  ROCKSDB_LIB_DIR = "${rocksdb}/lib";

  # NOTE: We don't build the WASM runtimes since this would require a more
  # complicated rust environment setup and this is only needed for developer
  # environments. The resulting binary is useful for end-users of live networks
  # since those just use the WASM blob from the network chainspec.
  SKIP_WASM_BUILD = 1;

  # We can't run the test suite since we didn't compile the WASM runtimes.
  doCheck = false;

  meta = with lib; {
    description = "Polkadot Node Implementation";
    homepage = "https://polkadot.network";
    license = licenses.gpl3Only;
    maintainers = with maintainers; [ akru andresilva asymmetric FlorianFranzen RaghavSood ];
    platforms = platforms.unix;
  };
}