From 7cb116abd61c827a563db41354a47ccc129fc8b1 Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Tue, 31 Mar 2026 23:32:36 +0000
Subject: [PATCH 1/2] feat: add catppuccin mocha status line via
 writeShellApplication

Implements a custom Claude Code status line script using
pkgs.writeShellApplication,
with colors mapped to Catppuccin Mocha (Mauve accent, Blue username,
Teal hostname,
Overlay1 directory/separators, Green git branch, Lavender model,
Overlay0 context).
Wires it into programs.claude-code.settings.statusLine.

https://claude.ai/code/session_01Y1aBPBGx3qSRDfhW8gc3b9
---
 modules/shell/ai/claude.nix | 78 +++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)

diff --git a/modules/shell/ai/claude.nix b/modules/shell/ai/claude.nix
index d62c751b..5fe3afc8 100644
--- a/modules/shell/ai/claude.nix
+++ b/modules/shell/ai/claude.nix
@@ -12,6 +12,77 @@
       packages.ralph-wiggum-plugin = pkgs.callPackage "${rootPath}/pkgs/ralph-wiggum-plugin" {
         src = inputs.claude-code-src;
       };
+
+      packages.claude-status-line = pkgs.writeShellApplication {
+        name = "claude-status-line";
+        runtimeInputs = [
+          pkgs.jq
+          pkgs.git
+          pkgs.coreutils
+          pkgs.inetutils
+        ];
+        text = ''
+          input=$(cat)
+
+          model=$(echo "$input" | jq -r '.model.display_name')
+          current_dir=$(echo "$input" | jq -r '.workspace.current_dir')
+          project_dir=$(echo "$input" | jq -r '.workspace.project_dir')
+
+          # Context window usage
+          context_info=""
+          usage=$(echo "$input" | jq '.context_window.current_usage')
+          if [ "$usage" != "null" ]; then
+              current=$(echo "$usage" | jq '.input_tokens + .cache_creation_input_tokens + .cache_read_input_tokens')
+              size=$(echo "$input" | jq '.context_window.context_window_size')
+              if [ "$size" != "null" ] && [ "$size" -gt 0 ] 2>/dev/null; then
+                  pct=$((current * 100 / size))
+                  context_info=$(printf "💭 %d%%" "$pct")
+              fi
+          fi
+
+          username=$(whoami)
+          hostname=$(hostname -s 2>/dev/null || hostname)
+
+          # Directory display (relative to project, else ~-abbreviated)
+          if [ -n "$project_dir" ] && [ "$current_dir" != "$project_dir" ]; then
+              display_dir=''${current_dir#"$project_dir"/}
+              if [ "$display_dir" = "$current_dir" ]; then
+                  display_dir=$(echo "$current_dir" | sed "s|^$HOME|~|")
+              fi
+          else
+              display_dir=$(echo "$current_dir" | sed "s|^$HOME|~|")
+          fi
+          # Replace leading ~ with  icon
+          display_dir=$(echo "$display_dir" | sed 's|^~| |')
+
+          # Git branch + dirty indicator
+          git_info=""
+          if git rev-parse --git-dir > /dev/null 2>&1; then
+              branch=$(git branch --show-current 2>/dev/null)
+              if [ -n "$branch" ]; then
+                  git_status=""
+                  if ! git diff-index --quiet HEAD -- 2>/dev/null; then
+                      git_status=" 📝"
+                  fi
+                  # Catppuccin Mocha Green (#a6e3a1 ≈ 150)
+                  git_info=$(printf " \033[2;38;5;150m %s\033[0m%s" "$branch" "$git_status")
+              fi
+          fi
+
+          # Catppuccin Mocha Overlay0 separator (#6c7086 ≈ 60)
+          sep=$'\033[2;38;5;60m\033[0m'
+
+          # Catppuccin Mocha palette (256-color approximations):
+          #   Mauve  (#cba6f7) ≈ 183  — ⚡ accent
+          #   Blue   (#89b4fa) ≈ 111  — username
+          #   Teal   (#94e2d5) ≈ 116  — hostname
+          #   Overlay1 (#7f849c) ≈ 103 — directory / separators
+          #   Lavender (#b4befe) ≈ 147 — model
+          #   Overlay0 (#6c7086) ≈ 60  — context info
+          printf "\033[38;5;183m⚡\033[0m %s \033[2;38;5;111m %s\033[0m\033[2;38;5;103m@\033[0m\033[2;38;5;116m💻 %s\033[0m %s \033[2;38;5;103m%s\033[0m%s %s \033[2;38;5;147m🧠 %s\033[0m \033[2;38;5;60m%s\033[0m" \
+              "$sep" "$username" "$hostname" "$sep" "$display_dir" "$git_info" "$sep" "$model" "$context_info"
+        '';
+      };
     };
   nixpkgs.config.allowUnfreePackages = [ "claude-code" ];
   flake.modules.homeManager.base =
@@ -20,6 +91,9 @@
       ralph-wiggum-plugin = withSystem pkgs.stdenv.hostPlatform.system (
         psArgs: psArgs.config.packages.ralph-wiggum-plugin
       );
+      claude-status-line = withSystem pkgs.stdenv.hostPlatform.system (
+        psArgs: psArgs.config.packages.claude-status-line
+      );
     in
     {
       programs.claude-code = {
@@ -110,6 +184,10 @@
           autoCompactEnabled = true;
           enableAllProjectMcpServers = true;
           outputStyle = "Explanatory";
+          statusLine = {
+            type = "command";
+            command = "${claude-status-line}/bin/claude-status-line";
+          };
         };
       };
     };

From 587710eecb1dd3ea179630178b2017b5d1d15f8b Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Wed, 1 Apr 2026 00:47:17 +0000
Subject: [PATCH 2/2] fix: replace sed with bash parameter substitution to
 satisfy shellcheck SC2001

https://claude.ai/code/session_01Y1aBPBGx3qSRDfhW8gc3b9
---
 modules/shell/ai/claude.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/modules/shell/ai/claude.nix b/modules/shell/ai/claude.nix
index 5fe3afc8..eae6c96f 100644
--- a/modules/shell/ai/claude.nix
+++ b/modules/shell/ai/claude.nix
@@ -47,13 +47,13 @@
           if [ -n "$project_dir" ] && [ "$current_dir" != "$project_dir" ]; then
               display_dir=''${current_dir#"$project_dir"/}
               if [ "$display_dir" = "$current_dir" ]; then
-                  display_dir=$(echo "$current_dir" | sed "s|^$HOME|~|")
+                  display_dir=''${current_dir/#"$HOME"/~}
               fi
           else
-              display_dir=$(echo "$current_dir" | sed "s|^$HOME|~|")
+              display_dir=''${current_dir/#"$HOME"/~}
           fi
           # Replace leading ~ with  icon
-          display_dir=$(echo "$display_dir" | sed 's|^~| |')
+          display_dir=''${display_dir/#~/}
 
           # Git branch + dirty indicator
           git_info=""