migrate nim pkg to nix

packages/nim/1.4.4/build.sh

@@ -1,18 +0,0 @@
-#!/bin/bash
-
-PREFIX=$(realpath $(dirname $0))
-
-mkdir -p build
-
-cd build
-
-# Prebuilt binary - source *can* be built, but it requires gcc
-curl -L "https://nim-lang.org/download/nim-1.4.4-linux_x64.tar.xz" -o nim.tar.xz
-tar xf nim.tar.xz --strip-components=1
-rm nim.tar.xz
-
-./install.sh "$PREFIX"
-
-cd ../
-
-rm -rf build

packages/nim/1.4.4/compile

@@ -1,5 +0,0 @@
-#!/usr/bin/env bash
-
-# Compile nim file(s)
-nim --hints:off --out:out --nimcache:./ c "$@"
-chmod +x out

packages/nim/1.4.4/environment

@@ -1 +0,0 @@
-export PATH=$PWD/nim/bin:$PATH

packages/nim/1.4.4/metadata.json

@@ -1,5 +0,0 @@
-{
-    "language": "nim",
-    "version": "1.4.4",
-    "aliases": ["nim"]
-}

packages/nim/1.4.4/run

@@ -1,4 +0,0 @@
-#!/bin/bash
-
-shift # Filename is only used to compile
-./out "$@"

packages/nim/1.4.4/test.nim

@@ -1 +0,0 @@
-echo("OK")

runtimes/default.nix

@@ -30,4 +30,5 @@ args: {
     "perl" = import ./perl.nix args;
     "octave" = import ./octave.nix args;
     "ocaml" = import ./ocaml.nix args;
+    "nim" = import ./nim.nix args;
 }

runtimes/nim.nix

@@ -0,0 +1,32 @@
+{pkgs, piston, ...}:
+let
+    pkg = pkgs.nim; 
+in piston.mkRuntime {
+    language = "nim";
+    version = pkg.version;
+    aliases = [];
+
+    compile = ''
+        ${pkg}/bin/nim --hints:off --out:out --nimcache:./ c "$@"
+        chmod +x out
+    '';
+
+    run = ''
+        shift
+        ./out "$@"
+    '';
+
+    tests = [
+        (piston.mkTest {
+            files = {
+                "test.nim" = ''
+                    echo("OK")
+                '';
+            };
+            args = [];
+            stdin = "";
+            packages = [];
+            main = "test.nim";
+        })
+    ];
+}