Convert some packages to nix-based

Affected packages:
- crystal
- dart
- dash
- deno
- elixir
- erlang
- gawk

runtimes/crystal.nix

@@ -0,0 +1,31 @@
+{pkgs, piston, ...}:
+let
+    pkg = pkgs.crystal;
+in piston.mkRuntime {
+    language = "crystal";
+    version = pkg.version;
+
+    aliases = [
+        "cr"
+    ];
+
+    compile = ''
+    ${pkg}/bin/crystal build "$@" -o out --no-color
+    chmod +x out
+    '';
+
+    run = ''
+    shift
+    ./out "$@"
+    '';
+
+    tests = [
+        (piston.mkTest {
+            files = {
+                "test.cr" = ''
+                    puts("OK")
+                '';
+            };
+        })
+    ];
+}

runtimes/dart.nix

@@ -0,0 +1,25 @@
+{pkgs, piston, ...}:
+let
+    pkg = pkgs.dart;
+in piston.mkRuntime {
+    language = "dart";
+    version = pkg.version;
+
+    aliases = [];
+
+    run = ''
+    ${pkg}/bin/dart run "$@"
+    '';
+
+    tests = [
+        (piston.mkTest {
+            files = {
+                "test.dart" = ''
+                    void main() {
+                        print('OK');
+                    }
+                '';
+            };
+        })
+    ];
+}

runtimes/dash.nix

@@ -0,0 +1,22 @@
+{pkgs, piston, ...}:
+let
+    pkg = pkgs.dash;
+in piston.mkRuntime {
+    language = "dash";
+    version = pkg.version;
+
+    aliases = [];
+
+    run = ''
+    ${pkg}/bin/dash "$@"
+    '';
+    tests = [
+        (piston.mkTest {
+            files = {
+                "test.dash" = ''
+                    echo "OK"
+                '';
+            };
+        })
+    ];
+}

runtimes/default.nix

@@ -5,4 +5,12 @@ args: {
     "bash" = import ./bash.nix args;
     "clojure" = import ./clojure.nix args;
     "cobol-gnu-cobol" = import ./cobol-gnu-cobol.nix args;
+    "crystal" = import ./crystal.nix args;
+    "dart" = import ./dart.nix args;
+    "dash" = import ./dash.nix args;
+    "deno-javascript" = import ./deno-javascript.nix args;
+    "deno-typescript" = import ./deno-typescript.nix args;
+    "elixir" = import ./elixir.nix args;
+    "erlang" = import ./erlang.nix args;
+    "gawk-awk" = import ./gawk-awk.nix args;
 }

runtimes/deno-javascript.nix

@@ -0,0 +1,27 @@
+{pkgs, piston, ...}:
+let
+    pkg = pkgs.deno;
+in piston.mkRuntime {
+    language = "javascript";
+    version = pkg.version;
+    runtime = "deno";
+
+    aliases = [
+        "js"
+        "deno-js"
+    ];
+
+    run = ''
+    DENO_DIR=$PWD ${pkg}/bin/deno run $@
+    '';
+
+    tests = [
+        (piston.mkTest {
+            files = {
+                "test.js" = ''
+                    console.log("OK");
+                '';
+            };
+        })
+    ];
+}

runtimes/deno-typescript.nix

@@ -0,0 +1,27 @@
+{pkgs, piston, ...}:
+let
+    pkg = pkgs.deno;
+in piston.mkRuntime {
+    language = "typescript";
+    version = pkg.version;
+    runtime = "deno";
+
+    aliases = [
+        "ts"
+        "deno-ts"
+    ];
+
+    run = ''
+    DENO_DIR=$PWD ${pkg}/bin/deno run $@
+    '';
+
+    tests = [
+        (piston.mkTest {
+            files = {
+                "test.ts" = ''
+                    console.log("OK");
+                '';
+            };
+        })
+    ];
+}

runtimes/elixir.nix

@@ -0,0 +1,30 @@
+{pkgs, piston, ...}:
+let
+    pkg = pkgs.elixir;
+in piston.mkRuntime {
+    language = "elixir";
+    version = pkg.version;
+
+    aliases = [
+        "exs"
+    ];
+
+    run = ''
+    export LC_ALL=en_US.UTF-8
+    ${pkg}/bin/elixir "$@"
+    '';
+
+    tests = [
+        (piston.mkTest {
+            files = {
+                "test.exs" = ''
+                    IO.puts("OK")
+                '';
+            };
+        })
+    ];
+
+    limitOverrides = {
+        "max_file_size" = 100000000; # 100MB
+    };
+}

runtimes/erlang.nix

@@ -0,0 +1,28 @@
+{pkgs, piston, ...}:
+let
+    pkg = pkgs.erlang;
+in piston.mkRuntime {
+    language = "erlang";
+    version = pkg.version;
+
+    aliases = [
+        "erl"
+        "escript"
+    ];
+
+    run = ''
+    ${pkg}/bin/escript "$@"
+    '';
+
+    tests = [
+        (piston.mkTest {
+            files = {
+                "test.erl" = ''
+                    
+                    main(_) ->
+                        io:format("OK~n").
+                '';
+            };
+        })
+    ];
+}

runtimes/gawk-awk.nix

@@ -0,0 +1,26 @@
+{pkgs, piston, ...}:
+let
+    pkg = pkgs.gawk;
+in piston.mkRuntime {
+    language = "awk";
+    version = pkg.version;
+    runtime = "gawk";
+
+    aliases = [];
+
+
+    run = ''
+    ${pkg}/bin/gawk -f "$@"
+    '';
+
+    tests = [
+        (piston.mkTest {
+            files = {
+                "test.awk" = ''
+                    {print "OK"}
+                '';
+            };
+            stdin = "\n"; # awk needs some line input
+        })
+    ];
+}