1 files changed, 155 insertions, 0 deletions
diff --git a/home-manager/fish/default.nix b/home-manager/fish/default.nix
new file mode 100644
index 0000000..93fd234
--- /dev/null
+++ b/home-manager/fish/default.nix
@@ -0,0 +1,155 @@
+{
+  programs ={
+    fish = {
+      enable = true;
+      generateCompletions = true;
+
+      interactiveShellInit = ''
+        set fish_greeting # Disable greeting
+        atuin init fish | source
+
+        complete -c nixos -f
+
+        complete -c nixos \
+          -n "__fish_use_subcommand" \
+          -a "update" \
+          -d "Update system using nh"
+
+        complete -c nixos \
+          -n "__fish_use_subcommand" \
+          -a "upgrade" \
+          -d "Upgrade system using nh"
+
+        complete -c nixos \
+          -n "__fish_use_subcommand" \
+          -a "config" \
+          -d "Edit nix config file"
+
+        complete -c nixos \
+          -n "__fish_use_subcommand" \
+          -a "clean" \
+          -d "Clean nix store"
+
+        complete -c nixos \
+          -n "__fish_seen_subcommand_from config" \
+          -a "(__fish_nixos_config_files)" \
+          -f
+      '';
+
+      shellAliases = {
+        ls = "eza --icons=always --color=always";
+        ll = "eza -a  --long --icons=always --color=always --no-time";
+        lt = "eza -a  --long --tree --icons=always --color=always --no-time";
+
+        cat = "bat";
+
+        grep = "grep --color=auto";
+
+        mv = "mv -i";
+        cp = "cp -i";
+        rm = "rm -i";
+
+        fetch = "fastfetch -c examples/7";
+      };
+      shellInitLast = ''
+        atuin init fish | source
+        eval "$(starship init fish)"
+      '';
+
+      functions = {
+        __fish_nixos_config_files = ''
+          # Only show directories and files inside ~/.nix
+          set base "$HOME/.nix"
+
+          for f in (command find $base \
+            \( -type d -name .git -prune \) -o \
+            -type f -print 2>/dev/null)
+
+            if string match -rq '\.(otf|ttf|svg|png|jpg)$' -- $f
+              continue
+            end
+            echo $f
+          end | while read -l f
+            set rel (string replace -r "^$base/" "" $f)
+            echo $rel
+          end
+        '';
+
+        nixos = ''
+          set defaultResponse "Usage: nixos update | up || nixos upgrade || nixos config <path> || nixos clean" 
+          if test (count $argv) -lt 1
+            echo defaultResponse
+            return 1
+          end
+
+          switch $argv[1]
+            case update up
+              if test (count $argv) -gt 1
+                echo "Error: 'nixos update' takes no additional arguments."
+                return 1
+              end
+              nh os switch $HOME/.nix
+            case upgrade
+              if test (count $argv) -gt 1
+                echo "Error: 'nixos upgrade' takes no additional arguments."
+                return 1
+              end
+              nh os switch $HOME/.nix -u --ask
+            case config
+              if test (count $argv) -lt 2
+                echo "Error: 'nixos config' requires a <path> argument (relative to $HOME/.nix)"
+                return 1
+              end
+              hx ~/.nix/$argv[2]
+            case clean
+              if test (count $argv) -gt 1
+                echo "Error: 'nixos clean' takes no additional arguments."
+                return 1
+              end
+              nh clean --verbose
+            case '*'
+              echo defaultResponse
+              return 1
+          end
+        '';
+
+        nix = ''
+          if test $argv[1] = develop
+            set -l flake
+            if test (count $argv) -lt 2
+              echo "Usage: nix develop <python|nim|js|flake> [..]"
+              return 1
+            end
+
+            switch $argv[2]
+              case python
+                set flake $HOME/.nix#python
+                set argv $argv[3..-1]
+              case js
+                set flake $HOME/.nix#js
+                set argv $argv[3..-1]
+              case python
+                set flake $HOME/.nix#nim
+                set argv $argv[3..-1]
+              case '*'
+                set flake $argv[2]
+                set argv $argv[3..-1]
+            end
+            command nix develop $flake -c fish
+          else
+            command nix $argv
+          end
+        '';
+      };
+    };
+
+    starship = {
+      enable = true;
+    };
+
+    atuin = {
+      enable = true;
+      enableFishIntegration = true;
+    };
+  };
+}