Add the Janet programming language.

maintainers/maintainer-list.nix

@@ -335,6 +335,11 @@
     github = "andrew-d";
     name = "Andrew Dunham";
   };
+  andrewchambers = {
+    email = "ac@acha.ninja";
+    github = "andrewchambers";
+    name = "Andrew Chambers";
+  };
   andrewrk = {
     email = "superjoe30@gmail.com";
     github = "andrewrk";

pkgs/development/interpreters/janet/default.nix

@@ -0,0 +1,32 @@
+{ stdenv, fetchFromGitHub }:
+stdenv.mkDerivation rec {
+  name = "janet-${version}";
+
+  version = "0.4.0";
+
+  src = fetchFromGitHub {
+    owner = "janet-lang";
+    repo = "janet";
+    rev = "v${version}";
+    sha256 = "1590f1fxb6qfhf1vp2xhbvdn2jfrgipn5572cckk1ma7f13jnkpy";
+  };
+
+  JANET_BUILD=''\"release\"'';
+
+  buildPhase = ''
+    PREFIX="$out" make
+  '';
+
+  installPhase = ''
+    mkdir "$out"
+    PREFIX="$out" make install
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Janet programming language";
+    homepage = https://janet-lang.org/;
+    license = stdenv.lib.licenses.mit;
+    platforms = platforms.all;
+    maintainers = with stdenv.lib.maintainers; [ andrewchambers ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -7809,6 +7809,8 @@ in
 
   j = callPackage ../development/interpreters/j {};
 
+  janet = callPackage ../development/interpreters/janet {};
+
   jimtcl = callPackage ../development/interpreters/jimtcl {};
 
   jmeter = callPackage ../applications/networking/jmeter {};