From 2316693e8883e0e4400f5b47cefc8d9c88e30067 Mon Sep 17 00:00:00 2001
From: John Lotoski <john.lotoski@iohk.io>
Date: Thu, 18 Jan 2024 13:55:37 -0600
Subject: [PATCH 1/2] imp: add pre- and post- process-compose hooks

---
 nix/process-compose/cli.nix     | 10 ++++++++++
 nix/process-compose/default.nix | 13 +++++++++----
 2 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/nix/process-compose/cli.nix b/nix/process-compose/cli.nix
index 095310a..f45ce2f 100644
--- a/nix/process-compose/cli.nix
+++ b/nix/process-compose/cli.nix
@@ -10,6 +10,11 @@ in
       default = true;
       description = "Enable or disable process-compose's Swagger API.";
     };
+    preHook = mkOption {
+      type = types.lines;
+      default = "";
+      description = "Shell commands to run before process-compose starts.";
+    };
     port = mkOption {
       type = types.int;
       default = 0;
@@ -17,6 +22,11 @@ in
         Port to serve process-compose's Swagger API on.
       '';
     };
+    postHook = mkOption {
+      type = types.lines;
+      default = "";
+      description = "Shell commands to run after process-compose completes.";
+    };
     tui = mkOption {
       type = types.bool;
       default = true;
diff --git a/nix/process-compose/default.nix b/nix/process-compose/default.nix
index 3f09416..cedb89b 100644
--- a/nix/process-compose/default.nix
+++ b/nix/process-compose/default.nix
@@ -37,7 +37,7 @@ in
 
   config.outputs =
     let
-      mkProcessComposeWrapper = { name, tui, apiServer, port, configFile }:
+      mkProcessComposeWrapper = { name, tui, apiServer, port, configFile, preHook, postHook }:
         pkgs.writeShellApplication {
           inherit name;
           runtimeInputs = [ config.package ];
@@ -50,7 +50,12 @@ in
               if tui then "" else "export PC_DISABLE_TUI=true"
             }
             ${if apiServer then "" else "export PC_NO_SERVER=true"}
-            exec process-compose -p ${toString port} "$@"
+
+            ${preHook}
+
+            process-compose -p ${toString port} "$@"
+
+            ${postHook}
           '';
         };
     in
@@ -59,7 +64,7 @@ in
         mkProcessComposeWrapper
           {
             inherit name;
-            inherit (config) tui apiServer port;
+            inherit (config) tui apiServer port preHook postHook;
             configFile = config.outputs.settingsYaml;
           };
       testPackage =
@@ -69,7 +74,7 @@ in
           mkProcessComposeWrapper
             {
               name = "${name}-test";
-              inherit (config) tui apiServer port;
+              inherit (config) tui apiServer port preHook postHook;
               configFile = config.outputs.settingsTestYaml;
             }
         else null;

From 472dd20466520c2ad348ff15d03fbbd11c41e774 Mon Sep 17 00:00:00 2001
From: Sridhar Ratnakumar <3998+srid@users.noreply.github.com>
Date: Fri, 19 Jan 2024 02:51:10 -0500
Subject: [PATCH 2/2] Update CHANGELOG.md

---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index c84779c..89295b6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@
     - New options
       - #52: Add `is_foreground` option
       - #54: Add `apiServer` option to control REST API server
+      - #56: Add `preHook` and `postHook` for running commands before and after launching process-compose respectively.
 - Fixes
     - #19: Reintroduce the `shell` option so process-compose doesn't rely on user's global bash (which doesn't exist nixosTest runners).
     - #22: `command` option is no longer wrapped in `writeShellApplication`.