add use direnv

Author: deemp

.envrc

@@ -0,0 +1,3 @@
+{
+    "haskell.serverExecutablePath": "haskell-language-server-wrapper"
+}

.vscode/settings.json

@@ -0,0 +1,14 @@
+{
+	"folders": [
+		{
+			"path": ".."
+		},
+		{
+			"path": "../back"
+		},
+		{
+			"path": "../front"
+		}
+	],
+	"settings": {}
+}

.vscode/try-phi.code-workspace

@@ -23,20 +23,36 @@ It is combined with [EO](https://github.com/objectionary/eo) editor. EO is based
 
 ## Development
 
-- Install dependencies
-
-  - [Back end](./back/README.md#dependencies)
-  - [Front end](./front/README.md#dependencies)
-
-- Build the server and front end
-
+- Install [Nix](https://nixos.org/download.html) (Single-user installation)
   ```sh
-  sh build.sh
+  sh <(curl -L https://nixos.org/nix/install) --no-daemon
   ```
 
-- Run the server and front end in separate terminals to see separate logs:
+- Install [direnv](https://nix.dev/tutorials/declarative-and-reproducible-developer-environments#direnv-automatically-activating-the-environment-on-directory-change) - steps 1, 2
 
+- For [VS Code](https://code.visualstudio.com/), install extensions
   ```sh
-  sh run_back.sh
-  sh run_front.sh
-  ```
+  code --install-extension mkhl.direnv --install-extension haskell.haskell --install-extension nwolverson.ide-purescript
+  ```
+
+- In separate terminals:
+  - backend dev
+    ```sh
+    cd back
+    # for the first time
+    direnv allow
+    # start the server
+    nix run
+    ```
+  - front
+    ```sh
+    cd front
+    # for the first time
+    direnv allow
+    # open app in a browser
+    npm run dev
+    # or any other commands from package.json
+    ```
+
+- For Haskell, your shell will have [haskell-language-server](https://github.com/haskell/haskell-language-server)
+- For Purescript - [purescript-language-server](https://github.com/nwolverson/purescript-language-server)

README.md

@@ -0,0 +1 @@
+use flake

back/.envrc

@@ -0,0 +1 @@
+use flake

flake.nix

@@ -1,6 +1,8 @@
-.*
-!.gitignore
-!.github
+.parcel-cache
+.spago
+
+.gitignore
+.github
 
 output
 generated-docs

front/.envrc

@@ -30,7 +30,10 @@
             ]) ++ (with easy-ps; [
               purs
               spago
+              purescript-language-server
+              purs-tidy
+              psa
             ]);
-          };
+          } // {shellHooks = "spago build";};
       });
 }