Add flake.nix for doc/docusaurus (IntersectMBO#6233)

* New shell for Docusaurus
* Fix broken links

doc/docusaurus/README.md

@@ -2,30 +2,21 @@
 
 This website is built using [Docusaurus](https://docusaurus.io/), a modern static website generator.
 
-### Installation
+### Development 
 
-```
-$ yarn
-```
+Follow the [nix setup guide](https://github.com/input-output-hk/iogx/blob/main/doc/nix-setup-guide.md) (this is reccomended) or alternatively use your local `yarn` installation.
 
-### Local development
+If using nix and while inside this directory, run `nix develop` to enter the shell.
 
+Now you can use `yarn` for development:
+```bash 
+yarn # to install dependencies 
+yarn build # to build the website 
+yarn start # for live development on localhost
 ```
-$ yarn start
-```
-
-This command starts a local development server and opens up a browser window. Most changes are reflected live without having to restart the server.
-
-### Build
-
-```
-$ yarn build
-```
-
-This command generates static content into the `build` directory and can be served using any static contents hosting service.
 
 ### Deployment
 
 Go to the [docusaurus-site.yml](https://github.com/IntersectMBO/plutus/actions/workflows/docusaurus-site.yml) workflow and click `Run workflow` on the right.
 
-This will build and publish the website to the `gh-pages` branch at https://intersectmbo.github.io/plutus/docs.
+This will build and publish the website to [GitHub pages](https://intersectmbo.github.io/plutus/docs).

doc/docusaurus/docs/reference/haddock-documentation.md

@@ -11,7 +11,7 @@ The documentation generated by Haddock provides a comprehehsive reference for th
 ### Highlighted modules
 
 Highlighted modules in the documentation include the following:
-- [PlutusTx](https://intersectmbo.github.io/plutus/haddock/latest/plutus-tx/html/PlutusTx.html): compiling Haskell to PLC (Plutus Core; on-chain code)
-- [PlutusTx.Prelude](https://intersectmbo.github.io/plutus/haddock/latest/plutus-tx/html/PlutusTx-Prelude.html): Haskell prelude replacement compatible with PLC
-- [PlutusCore](https://intersectmbo.github.io/plutus/haddock/latest/plutus-core/html/PlutusCore.html): programming language in which scripts on the Cardano blockchain are written
-- [UntypedPlutusCore](https://intersectmbo.github.io/plutus/haddock/latest/plutus-core/html/UntypedPlutusCore.html): on-chain Plutus code.
+- [PlutusTx](https://intersectmbo.github.io/plutus/haddock/latest/plutus-tx/PlutusTx.html): compiling Haskell to PLC (Plutus Core; on-chain code)
+- [PlutusTx.Prelude](https://intersectmbo.github.io/plutus/haddock/latest/plutus-tx/PlutusTx-Prelude.html): Haskell prelude replacement compatible with PLC
+- [PlutusCore](https://intersectmbo.github.io/plutus/haddock/latest/plutus-core/PlutusCore.html): programming language in which scripts on the Cardano blockchain are written
+- [UntypedPlutusCore](https://intersectmbo.github.io/plutus/haddock/latest/plutus-core/UntypedPlutusCore.html): on-chain Plutus code.

doc/docusaurus/flake.nix

@@ -0,0 +1,21 @@
+{
+  description = "A flake for developing the docusaurus site";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+    flake-parts.url = "github:hercules-ci/flake-parts";
+  };
+
+  outputs = inputs@{ flake-parts, ... }:
+    flake-parts.lib.mkFlake { inherit inputs; } {
+      systems = [ "x86_64-linux" "x86_64-darwin" "aarch64-darwin" "aarch64-linux" ];
+      perSystem = { pkgs, ... }: {
+        devShells.default = pkgs.mkShell {
+          packages = [ pkgs.yarn pkgs.linkchecker ];
+          shellHook = ''
+            PS1="\[\033[32m\]\u@\h\[\033[0m\]:\[\033[33m\]\w\[\033[0m\]\$ "
+          '';
+        };
+      };
+    };
+}