build: support pkg managers installation (#87)

closes #71, #84, #86
- AUR
- Homebrew
- Nix
- Debian (.deb)
- RPM (.rpm)
- Aqua
- ASDF

This is my first time doing this, so there might be mistakes. If you
can't download it through any pkg manager, please leave a comment or
open an issue

---------

Co-authored-by: use-the-fork <23747916+use-the-fork@users.noreply.github.com>

flake.nix

@@ -1,52 +1,66 @@
 {
-  description = "IRIS - Shell commands suggestion tool";
-
   inputs = {
+    systems.url = "github:nix-systems/default";
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-parts.url = "github:hercules-ci/flake-parts";
   };
 
-  outputs = { self, nixpkgs }:
-    let
-      supportedSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
-      forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
-      pkgsFor = system: nixpkgs.legacyPackages.${system};
-    in
+  outputs = inputs @ {flake-parts, ...}:
+    flake-parts.lib.mkFlake
     {
-      packages = forAllSystems (system:
-        let
-          pkgs = pkgsFor system;
-        in
-        {
-          iris = pkgs.buildGoModule {
-            pname = "iris";
-            version = self.shortRev or "dirty";
-            src = ./.;
+      inherit inputs;
+    }
+    (
+      {
+        inputs,
+        self,
+        ...
+      }: {
+        systems = import inputs.systems;
+        perSystem = {
+          pkgs,
+          self',
+          ...
+        }: {
+          packages = {
+            iris = pkgs.buildGoModule {
+              pname = "iris";
+              version = self.shortRev or "dirty";
+              src = pkgs.lib.cleanSource ./.;
 
-            subPackages = [ "cmd/iris" ];
+              subPackages = ["cmd/iris"];
 
-            proxyVendor = true;
-            vendorHash = "sha256-kBSMhUsuCKIjAXjGfl1WSjCX+tlGi9BTnkRu9ScW6M0=";
+              proxyVendor = true;
+              vendorHash = "sha256-kBSMhUsuCKIjAXjGfl1WSjCX+tlGi9BTnkRu9ScW6M0=";
 
-            doCheck = false;
+              doCheck = false;
 
-            meta = with pkgs.lib; {
-              description = "A shell auto-completion tool that works like code editor's IntelliSense";
-              homepage = "https://github.com/versenilvis/iris";
-              license = licenses.mit;
-              mainProgram = "iris";
+              meta = with pkgs.lib; {
+                description = "A highly customizable, blazing fast and context-aware CLI autocomplete/navigation tool";
+                homepage = "https://github.com/versenilvis/iris";
+                license = licenses.mit;
+                mainProgram = "iris";
+              };
             };
+            default = self'.packages.iris;
           };
-          default = self.packages.${system}.iris;
-        });
 
-      devShells = forAllSystems (system:
-        let
-          pkgs = pkgsFor system;
-        in
-        {
-          default = pkgs.mkShell {
-            buildInputs = with pkgs; [ go ];
+          devShells.default = pkgs.mkShellNoCC {
+            # Tell Direnv to shut up.
+            DIRENV_LOG_FORMAT = "";
+
+            packages = [
+              # languages
+              pkgs.go
+              pkgs.pkl
+
+              # Tooling
+              pkgs.hk
+              pkgs.just
+              pkgs.alejandra
+            ];
           };
-        });
-    };
+        };
+      }
+    );
 }