1 files changed, 17 insertions, 2 deletions
diff --git a/default.nix b/default.nix
index ad898a9..8a0e155 100644
--- a/default.nix
+++ b/default.nix
@@ -21,17 +21,32 @@ in
       lib.concatLines (
         lib.mapAttrsToList (name: cmd: "${name}: ${cmd}") procGroup
       );
+
+    mkRunCommand = procRunner: procfile: let
+      inherit (builtins.parseDrvName procRunner.name) name;
+      default = "${lib.getExe procRunner} ${procfile}";
+    in
+      # special cases for officially supported procfile runners
+      {
+        overmind = ''overmind start -f ${procfile} --root "$PWD" "$@"'';
+        honcho = ''honcho start -f ${procfile} --app-root "$PWD" "$@"'';
+      }
+      .${name}
+      or default;
   in {
     mkProcfileRunner = {
       name,
       procGroup,
+      procRunner ? pkgs.overmind,
     }:
       pkgs.writeShellApplication {
         inherit name;
-        runtimeInputs = [pkgs.overmind];
+        runtimeInputs = [procRunner];
         text = ''
           set -x
-          overmind start -f ${pkgs.writeText name (toProcfile procGroup)} --root "$PWD" "$@"
+          ${mkRunCommand procRunner (
+            pkgs.writeText "Procfile" (toProcfile procGroup)
+          )}
         '';
       };
   }