feat(nix): user flake instead regular shell.nix

nix/default.nix

@@ -0,0 +1,8 @@
+
+{ ... }:
+{
+  imports = [
+    ./packages.nix
+    ./devshells.nix
+  ];
+}

nix/devshells.nix

@@ -0,0 +1,28 @@
+_: {
+  config.perSystem =
+    {
+      config,
+      inputs',
+      pkgs,
+      ...
+    }:
+    {
+      devShells = {
+        default = pkgs.mkShell {
+          name = "hugo-shell";
+          nativeBuildInputs = config.develPackages
+            ++ config.hugoBuildPackages
+          ;
+          shellook = ''
+            mkdir -p themes
+            ln -snf "${config.themePackage}/" "themes/mainroad"
+          '';
+        };
+        latex = pkgs.mkShell {
+          name = "latex-shell";
+          nativeBuildInputs = config.develPackages
+            ++ config.latexBuildPackages;
+        };
+      };
+    };
+}

nix/packages.nix

@@ -0,0 +1,81 @@
+{
+  lib,
+  inputs,
+  ...
+}:
+let
+  inherit (lib) mkOption mdDoc types;
+  inherit (inputs.flake-parts.lib) mkPerSystemOption;
+in
+{
+  options.perSystem = mkPerSystemOption (
+    {
+      pkgs,
+      config,
+      ...
+    }:
+    {
+      options = {
+        latexBuildPackages = mkOption {
+          description = mdDoc "Packages needed to build latex file";
+          type = types.listOf types.package;
+          default = with pkgs; [
+            (pkgs.texlive.combine {
+              inherit (pkgs.texlive)
+                babel-french
+                caption
+                collection-luatex
+                float
+                fontawesome
+                fontspec
+                lato
+                libertine
+                listings
+                lstfiracode
+                pdfpages
+                pdflscape
+                scheme-basic
+                soul
+                titlesec
+                xcolor
+                ;
+            })
+            fira-code
+          ];
+        };
+
+        hugoBuildPackages = mkOption {
+          description = mdDoc "Packages needed to build latex file";
+          type = types.listOf types.package;
+          default = with pkgs; [
+            hugo
+          ];
+        };
+
+        themePackage = mkOption {
+          description = mdDoc "Theme user for my course note";
+          default = pkgs.stdenvNoCC.mkDerivation {
+            name = "hugo-theme-mainroad";
+            pname = "hugo-theme-mainroad";
+            src = pkgs.fetchFromGitHub {
+              owner = "vimux";
+              repo = "mainroad";
+              rev = "13e04b3694ea2d20a68cfbfaea42a8c565079809";
+              sha256 = "sha256-td8xQhAz/TnjZmOKIEiQjRgzdoicRrVN9h41Uxnnaso=";
+            };
+            installPhase = ''
+              cp -r $src $out
+            '';
+          };
+        };
+        develPackages = mkOption {
+          description = mdDoc "Python package used to development";
+          type = types.listOf types.package;
+          default = with pkgs; [
+            convco
+            go-task
+          ];
+        };
+      };
+  });
+}