add gtfs validator as a service

This just runs the GTFS validator as a web service, since it's a
horrible piece of python2 stuff which I don't want to set up every time
I used it (nor except other people to do so if they need it).

1 files changed, 30 insertions, 0 deletions

diff --git a/hosts/chaski/services/VaaS/default.nix b/hosts/chaski/services/VaaS/default.nix
new file mode 100644
index 0000000..427270c
--- /dev/null
+++ b/hosts/chaski/services/VaaS/default.nix
@@ -0,0 +1,30 @@
+{ pkgs, compiler ? "default", doBenchmark ? false }:
+
+let
+
+  inherit pkgs;
+
+  f = { mkDerivation, base, base32, bytestring, http-client
+      , http-client-tls, http-types, lib, process, wai, warp
+      }:
+      mkDerivation {
+        pname = "VaaS";
+        version = "0.1.0.0";
+        src = ./.;
+        isLibrary = false;
+        isExecutable = true;
+        executableHaskellDepends = [
+          base base32 bytestring http-client http-client-tls http-types
+          process wai warp
+        ];
+        license = "unknown";
+        hydraPlatforms = lib.platforms.none;
+      };
+
+  haskellPackages = if compiler == "default"
+                       then pkgs.haskellPackages
+                       else pkgs.haskell.packages.${compiler};
+
+  variant = if doBenchmark then pkgs.haskell.lib.doBenchmark else pkgs.lib.id;
+in
+  variant (haskellPackages.callPackage f {})