payme: fix version number string (#297480)

    owner = "jovandeginste";

    repo = "payme";

    rev = "v${version}";

    hash = "sha256-WE/sAs0VSeb5UKkUy1iyjyXtgDmlQhdZkw8HMMSbQiE=";

    hash = "sha256-2gZgmYgLaJQRQ+3VOUDnMm5QBjfKyxyutVf9NrbGO3g=";

    leaveDotGit = true;

    postFetch = ''

      cd "$out"

      git rev-parse HEAD > $out/COMMIT

      find "$out" -name .git -print0 | xargs -0 rm -rf

    '';

  };

  vendorHash = null;

  ldflags = [

    "-s"

    "-w"

    "-X main.gitRefName=${src.rev}"

  ];

  preBuild = ''

    ldflags+=" -X main.gitCommit=$(cat COMMIT)"

  '';

  meta = {

    description = "QR code generator (ASCII & PNG) for SEPA payments";

    mainProgram = "payme";