refactor: pull out flake devshells

devshell/c.nix

@@ -0,0 +1,17 @@
+{
+  system,
+  pkgs,
+  self 
+}: pkgs.mkShell {
+  buildInputs = (with pkgs; [
+      inotify-tools
+      gdb
+      gcc
+    ]) ++ (with self.packages.${system}; [
+      c-hectic
+      nvim-pager
+      watch
+    ]);
+
+    PAGER = "${self.packages.${system}.nvim-pager}/bin/pager";
+  }

devshell/default.nix

@@ -0,0 +1,24 @@
+{
+  system,
+  pkgs,
+  self 
+}: pkgs.mkShell {
+  buildInputs =
+    (with self.packages.${system}; [
+      nvim-alias
+      #prettify-log
+      nvim-pager
+    ])
+    ++ (with pkgs; [
+      git
+      jq
+      yq-go
+      curl
+      (writeScriptBin "hemar-check" ''
+        ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null vm-postgres 'zsh -c check'
+      '')
+    ]);
+
+  # environment
+  PAGER = "${self.packages.${system}.nvim-pager}/bin/pager";
+}

devshell/haskell.nix

@@ -0,0 +1,8 @@
+{
+  system,
+  pkgs,
+  self 
+}: self.devShells.${system}.default
+  // (pkgs.mkShell {
+    buildInputs = [pkgs.stack];
+  })

devshell/postgres-c.nix

@@ -0,0 +1,22 @@
+{
+  system,
+  pkgs,
+  self 
+}: pkgs.mkShell {
+  buildInputs = (with pkgs; [
+      inotify-tools
+      postgresql_15
+    ]) ++ (with self.packages.${system}; [
+      nvim-pager 
+    ]) ++ (with pkgs; [
+      gdb
+      gcc
+    ]);
+
+  PAGER = "${self.packages.${system}.nvim-pager}/bin/pager";
+
+  shellHook = ''
+    export PATH=${pkgs.gcc}/bin:$PATH
+    export PAGER="${self.packages.${system}.nvim-pager}/bin/pager"
+  '';
+}

devshell/pure-c.nix

@@ -0,0 +1,14 @@
+{
+  system,
+  pkgs,
+  self 
+}: pkgs.mkShell {
+  buildInputs = (with pkgs; [ inotify-tools ]) ++ (with self.packages.${system}; [ nvim-pager ]) ++ (with pkgs; [ gdb gcc binutils ]);
+  PAGER = "${self.packages.${system}.nvim-pager}/bin/pager";
+
+  shellHook = ''
+    export PATH=${pkgs.gcc}/bin:$PATH
+
+    export PAGER="${self.packages.${system}.nvim-pager}/bin/pager"
+  '';
+}

devshell/rust.nix

@@ -0,0 +1,17 @@
+{ 
+  self,
+  pkgs,
+  system
+}: let
+  rustToolchain =
+    if builtins.pathExists ./rust-toolchain.toml
+    then pkgs.pkgsBuildHost.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml
+    else pkgs.pkgsBuildHost.rust-bin.stable."1.81.0".default;
+in
+  self.devShells.${system}.default
+  // (pkgs.mkShell {
+    nativeBuildInputs = [
+      rustToolchain
+      pkgs.pkg-config
+    ];
+  })