Add Hercules CI configuration

Closes #62

ci.nix

@@ -0,0 +1,102 @@
+let
+    generateMustacheDrv = { pkgs, php, phpYaml }:
+        let
+            mustache_spec = pkgs.callPackage (import ((fetchTarball {
+                url = https://github.com/jbboehr/mustache-spec/archive/5b85c1b58309e241a6f7c09fa57bd1c7b16fa9be.tar.gz;
+                sha256 = "1h9zsnj4h8qdnzji5l9f9zmdy1nyxnf8by9869plyn7qlk71gdyv";
+            }))) {};
+        in
+        pkgs.runCommand "pecl-mustache.tgz" {
+            buildInputs = [ php ];
+            src = builtins.filterSource
+                (path: type: baseNameOf path != ".idea" && baseNameOf path != ".git" && baseNameOf path != "ci.nix")
+                ./.;
+        } ''
+            cp -r $src/* .
+            chmod -R +w tests
+            php -d extension=${phpYaml}/lib/php/extensions/yaml.so generate-tests.php ${mustache_spec}/share/mustache-spec/specs
+            pecl package | tee tmp.txt
+            pecl_tgz=$(cat tmp.txt | grep -v Warning | awk '{print $2}')
+            echo $pecl_tgz
+            cp $pecl_tgz $out
+        '';
+
+    generateMustacheTestsForPlatform = { pkgs, php, buildPecl, phpMustacheSrc }:
+        pkgs.recurseIntoAttrs {
+            mustache = pkgs.callPackage ./default.nix {
+               inherit php buildPecl phpMustacheSrc;
+            };
+        };
+in
+builtins.mapAttrs (k: _v:
+  let
+    path = builtins.fetchTarball {
+       url = https://github.com/NixOS/nixpkgs/archive/release-19.09.tar.gz;
+       name = "nixpkgs-19.09";
+    };
+    pkgs = import (path) { system = k; };
+
+    phpMustacheSrc = generateMustacheDrv {
+        inherit pkgs;
+        inherit (pkgs) php;
+        phpYaml = pkgs.phpPackages.yaml;
+    };
+  in
+  pkgs.recurseIntoAttrs {
+    peclDist = phpMustacheSrc;
+
+    php71 = let
+        path = builtins.fetchTarball {
+           url = https://github.com/NixOS/nixpkgs/archive/release-19.03.tar.gz;
+           name = "nixpkgs-19.03";
+        };
+        pkgs = import (path) { system = k; };
+        php = pkgs.php71;
+    in generateMustacheTestsForPlatform {
+        inherit pkgs php phpMustacheSrc;
+        buildPecl = pkgs.callPackage "${path}/pkgs/build-support/build-pecl.nix" { inherit php; };
+    };
+
+    php72 = let
+        php = pkgs.php72;
+    in generateMustacheTestsForPlatform {
+        inherit pkgs php phpMustacheSrc;
+        buildPecl = pkgs.callPackage "${path}/pkgs/build-support/build-pecl.nix" { inherit php; };
+    };
+
+    php73 = let
+        php = pkgs.php73;
+    in generateMustacheTestsForPlatform {
+        inherit pkgs php phpMustacheSrc;
+        buildPecl = pkgs.callPackage "${path}/pkgs/build-support/build-pecl.nix" { inherit php; };
+    };
+
+    php74 = let
+        path = builtins.fetchTarball {
+           url = https://github.com/NixOS/nixpkgs/archive/master.tar.gz;
+           name = "nixpkgs-unstable";
+        };
+        pkgs = import (path) { system = k; };
+        php = pkgs.php74;
+    in generateMustacheTestsForPlatform {
+        inherit pkgs php phpMustacheSrc;
+        buildPecl = pkgs.callPackage "${path}/pkgs/build-support/build-pecl.nix" { inherit php; };
+    };
+
+    php = let
+        path = builtins.fetchTarball {
+           url = https://github.com/NixOS/nixpkgs/archive/master.tar.gz;
+           name = "nixpkgs-unstable";
+        };
+        pkgs = import (path) { system = k; };
+        php = pkgs.php;
+    in generateMustacheTestsForPlatform {
+        inherit pkgs php phpMustacheSrc;
+        buildPecl = pkgs.callPackage "${path}/pkgs/build-support/build-pecl.nix" { inherit php; };
+    };
+  }
+) {
+  x86_64-linux = {};
+  # Uncomment to test build on macOS too
+  # x86_64-darwin = {};
+}

derivation.nix

@@ -32,6 +32,6 @@ buildPecl rec {
 
   doCheck = true;
   checkTarget = "test";
-  checkFlagsArray = ["REPORT_EXIT_STATUS=1" "NO_INTERACTION=1" "TEST_PHP_DETAILED=1"];
+  checkFlags = ["REPORT_EXIT_STATUS=1" "NO_INTERACTION=1"];
 }