Nixify scripts using mission-control (#72)

https://github.com/Platonic-Systems/mission-control

.vscode/tasks.json

@@ -6,10 +6,14 @@
         {
             "label": "Ghcid",
             "type": "shell",
-            // You may also use bin/run-via-tmux if you have tmux
             // This is useful if you often see ghost ghcid left behind by VSCode reloads.
-            "command": "bin/run",
-            "args": [],
+            "command": "nix",
+            "args": [
+                "develop",
+                "-c",
+                ",",
+                "run"
+            ],
             "problemMatcher": [],
             "group": {
                 "kind": "build",

README.md

@@ -7,12 +7,13 @@ Get a Haskell development environment up and running quickly. Thanks to Nix, thi
 - [fourmolu](https://github.com/fourmolu/fourmolu) autoformatting 
 - [Relude](https://github.com/kowainik/relude#relude) as Prelude.
   - `.hlint.yaml` is [from relude](https://github.com/kowainik/relude/blob/main/.hlint.yaml)
+- Devshell scripts (`,` prefixed) are provided via [mission-control](https://github.com/Platonic-Systems/mission-control)
 
 If you have an *existing* Haskell project, you should probably use https://github.com/srid/haskell-flake instead.
 
 ## Getting Started
 
-*tldr: Install Nix, enable Flakes, open in VSCode and run `bin/run`.*
+*tldr: Install Nix, enable Flakes, open in VSCode and run `, run`.*
 
 For details, see: https://srid.ca/haskell-template/start
 
@@ -21,7 +22,7 @@ For details, see: https://srid.ca/haskell-template/start
 - Run `nix flake update` to update all flake inputs.
 - Run `nix --option sandbox false build .#check -L` to run the flake checks.
 - Run `treefmt` in nix shell to autoformat the project. This uses [treefmt](https://github.com/numtide/treefmt), which uses `./treefmt.toml` (where fourmolu and nixpkgs-fmt are specified).
-- Run `bin/hoogle` to start Hoogle with packages in your cabal file.
+- Run `, docs` to start Hoogle with packages in your cabal file.
 - Run the application without installing: `nix run github:srid/haskell-template` (or `nix run .` from checkout)
 - Common workflows
   - Adding library dependencies in Nix: https://srid.ca/haskell-template/dependency

bin/hoogle

@@ -1,5 +0,0 @@
-#!/usr/bin/env bash
-set -xe
-
-echo http://127.0.0.1:8888
-exec nix develop -i -c hoogle serve -p 8888 --local

bin/repl

@@ -1,4 +0,0 @@
-#!/usr/bin/env bash
-set -xe
-
-exec nix develop -i -c cabal -- repl

bin/run

@@ -1,4 +0,0 @@
-#!/usr/bin/env bash
-set -xe
-
-exec nix develop -i -c ghcid -c "cabal repl exe:haskell-template" --warnings -T :main

flake.lock

@@ -18,6 +18,21 @@
         "type": "github"
       }
     },
+    "flake-root": {
+      "locked": {
+        "lastModified": 1671295174,
+        "narHash": "sha256-5K+wdsB5TYSmI6HeexOMvJTZTBdXb9RbiFwXRtQkE3M=",
+        "owner": "srid",
+        "repo": "flake-root",
+        "rev": "bb96b89f65d7c47457303f2385798a09f4a1dd5a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "srid",
+        "repo": "flake-root",
+        "type": "github"
+      }
+    },
     "haskell-flake": {
       "locked": {
         "lastModified": 1668167720,
@@ -33,6 +48,24 @@
         "type": "github"
       }
     },
+    "mission-control": {
+      "inputs": {
+        "flake-root": "flake-root"
+      },
+      "locked": {
+        "lastModified": 1671297603,
+        "narHash": "sha256-0fotrPbgV4WyJwh9RZ/eSWALMeAKr+n3JCQZU130BLI=",
+        "owner": "Platonic-Systems",
+        "repo": "mission-control",
+        "rev": "ede1ce90f17223f32ae21f2b12b8c26fd95a707e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "Platonic-Systems",
+        "repo": "mission-control",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1670148586,
@@ -71,6 +104,7 @@
       "inputs": {
         "flake-parts": "flake-parts",
         "haskell-flake": "haskell-flake",
+        "mission-control": "mission-control",
         "nixpkgs": "nixpkgs",
         "treefmt-flake": "treefmt-flake"
       }

flake.nix

@@ -5,6 +5,7 @@
     flake-parts.url = "github:hercules-ci/flake-parts";
     haskell-flake.url = "github:srid/haskell-flake";
     treefmt-flake.url = "github:srid/treefmt-flake";
+    mission-control.url = "github:Platonic-Systems/mission-control";
   };
 
   outputs = inputs@{ self, nixpkgs, flake-parts, ... }:
@@ -13,9 +14,11 @@
       imports = [
         inputs.haskell-flake.flakeModule
         inputs.treefmt-flake.flakeModule
+        inputs.mission-control.flakeModule
       ];
-      perSystem = { self', config, pkgs, ... }: {
-        haskellProjects.default = {
+      perSystem = { self', lib, config, pkgs, ... }: {
+        # The "main" project. You can have multiple projects, but this template has only one.
+        haskellProjects.main = {
           packages = {
             haskell-template.root = ./.;
           };
@@ -34,7 +37,40 @@
             cabal-fmt
             fourmolu;
         };
-        packages.default = self'.packages.haskell-template;
+        mission-control.scripts = {
+          docs = {
+            description = "Start Hoogle server for project dependencies";
+            command = ''
+              echo http://127.0.0.1:8888
+              hoogle serve -p 8888 --local
+            '';
+            category = "Dev Tools";
+          };
+          repl = {
+            description = "Start the cabal repl";
+            command = ''
+              cabal repl "$@"
+            '';
+            category = "Dev Tools";
+          };
+          fmt = {
+            description = "Auto-format the source tree";
+            command = "treefmt";
+            category = "Dev Tools";
+          };
+          run = {
+            description = "Run the project with ghcid auto-recompile";
+            command = ''
+              ghcid -c "cabal repl exe:haskell-template" --warnings -T :main
+            '';
+            category = "Primary";
+          };
+        };
+        packages.default = self'.packages.main-haskell-template;
+        devShells.default =
+          config.mission-control.installToDevShell config.devShells.main;
       };
     };
 }
+
+

garnix.yaml

@@ -4,4 +4,4 @@ builds:
     - "*.x86_64-linux.*"
   exclude:
     # https://github.com/srid/haskell-flake/issues/21
-    - "checks.*.default-hls"
+    - "checks.*.main-hls"

src/Main.hs

@@ -5,7 +5,7 @@ import Main.Utf8 qualified as Utf8
 {- |
  Main entry point.
 
- The `bin/run` script will invoke this function.
+ The `, run` script will invoke this function.
 -}
 main :: IO ()
 main = do