Preparation for using Hydra for CI.

ci/ci.nix

@@ -0,0 +1,30 @@
+{ supportedSystems ? ["x86_64-linux"]
+, supportedCompilers ? ["ghc7103" "ghc802"]
+}:
+
+with (import <nixpkgs/pkgs/top-level/release-lib.nix> { inherit supportedSystems; });
+
+let
+  pkgs = import <nixpkgs> {};
+
+  configurations = 
+    pkgs.lib.listToAttrs (
+      pkgs.lib.concatMap (compiler: 
+        pkgs.lib.concatMap (system: 
+          [{name = "fp-course_" + compiler + "_" + system; value = {inherit compiler system;};}]
+        ) supportedSystems
+      ) supportedCompilers
+    );
+
+  jobs =
+      pkgs.lib.mapAttrs (name: configuration: 
+          let
+            compiler = configuration.compiler; 
+            system = configuration.system; 
+            nixpkgs = { pkgs = pkgsFor system; };
+            course = import ../default.nix { inherit nixpkgs compiler; };
+          in
+            course
+      ) configurations;
+in
+  jobs

ci/jobsets.json

@@ -0,0 +1,16 @@
+{
+    "enabled": 1,
+    "hidden": false,
+    "description": "jobsets",
+    "nixexprinput": "fp-course",
+    "nixexprpath": "ci/jobsets.nix",
+    "checkinterval": 300,
+    "schedulingshares": 1,
+    "enableemail": false,
+    "emailoverride": "",
+    "keepnr": 5,
+    "inputs": {
+        "fp-course": { "type": "git", "value": "https://github.com/data61/fp-course.git master", "emailresponsible": false },
+        "nixpkgs": { "type": "git", "value": "https://github.com/NixOS/nixpkgs.git release-17.03", "emailresponsible": false }
+    }
+}

ci/jobsets.nix

@@ -0,0 +1,27 @@
+{ nixpkgs, declInput }: let pkgs = import nixpkgs {}; in {
+  jobsets = pkgs.runCommand "spec.json" {} ''
+    cat <<EOF
+    ${builtins.toXML declInput}
+    EOF
+    cat > $out <<EOF
+    {
+        "fp-course": {
+            "enabled": 1,
+            "hidden": false,
+            "description": "FP Course",
+            "nixexprinput": "fp-course",
+            "nixexprpath": "./ci/ci.nix",
+            "checkinterval": 300,
+            "schedulingshares": 1,
+            "enableemail": false,
+            "emailoverride": "",
+            "keepnr": 5,
+            "inputs": {
+                "fp-course": { "type": "git", "value": "https://github.com/data61/fp-course.git master", "emailresponsible": false },
+                "nixpkgs": { "type": "git", "value": "https://github.com/NixOS/nixpkgs.git release-17.03", "emailresponsible": false }
+            }
+        }
+    }
+    EOF
+  '';
+}

default.nix

@@ -0,0 +1,23 @@
+{ nixpkgs ? import <nixpkgs> {}, compiler ? "default" }:
+
+let
+  inherit (nixpkgs) pkgs;
+
+  haskellPackages = if compiler == "default"
+                       then pkgs.haskellPackages
+                       else pkgs.haskell.packages.${compiler};
+
+  modifiedHaskellPackages = haskellPackages.override {
+    overrides = self: super: {
+      tasty-discover = pkgs.haskell.lib.dontCheck super.tasty-discover_3_0_2;
+    };
+  };
+
+  fp-course = modifiedHaskellPackages.callPackage ./fp-course.nix {};
+  # Dodgy fun times, make sure that 
+  # - the tests compile
+  # - the tests failing doesn't cause the build to fail
+  modified-fp-course = pkgs.haskell.lib.overrideCabal fp-course (drv: { checkPhase = "true"; });
+in
+  modified-fp-course
+

shell.nix

@@ -1,20 +1,6 @@
-{ nixpkgs ? import <nixpkgs> {}, compiler ? "default" }:
-
+{ nixpkgs ? import <nixpkgs> {}}:
 let
   inherit (nixpkgs) pkgs;
-
-  haskellPackages = if compiler == "default"
-                       then pkgs.haskellPackages
-                       else pkgs.haskell.packages.${compiler};
-
-  modifiedHaskellPackages = haskellPackages.override {
-    overrides = self: super: {
-      tasty-discover = pkgs.haskell.lib.dontCheck super.tasty-discover_3_0_2;
-    };
-  };
-
-  drv = modifiedHaskellPackages.callPackage ./fp-course.nix {};
-
+  fp-course = import ./default.nix {};
 in
-
-  if pkgs.lib.inNixShell then drv.env else drv
+  if pkgs.lib.inNixShell then fp-course.env else fp-course