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nixos-configs/home/roles/development/default.nix
John Ogle a823caf369
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Nix

{ config, lib, pkgs, globalInputs, system, ... }:
with lib;
let
cfg = config.home.roles.development;
# Fetch the claude-plugins repository (for humanlayer commands/agents)
# Update the rev to get newer versions of the commands
claudePluginsRepo = builtins.fetchGit {
url = "https://github.com/jeffh/claude-plugins.git";
# To update: change this to the latest commit hash
# You can find the latest commit at: https://github.com/jeffh/claude-plugins/commits/main
rev = "5e3e4d937162185b6d78c62022cbfd1c8ad42c4c";
ref = "main";
};
# Claude Code statusline: shows model, cwd, git branch, and context usage %
claudeCodeStatusLineConfig = pkgs.writeText "claude-statusline.json" (builtins.toJSON {
type = "command";
command = ''input=$(cat); model=$(echo "$input" | jq -r '.model.display_name'); cwd=$(echo "$input" | jq -r '.workspace.current_dir'); if git -C "$cwd" rev-parse --git-dir > /dev/null 2>&1; then branch=$(git -C "$cwd" --no-optional-locks rev-parse --abbrev-ref HEAD 2>/dev/null || echo ""); if [ -n "$branch" ]; then git_info=" on $branch"; else git_info=""; fi; else git_info=""; fi; usage=$(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'); pct=$((current * 100 / size)); context_info=" | ''${pct}% context"; else context_info=""; fi; printf "%s in %s%s%s" "$model" "$cwd" "$git_info" "$context_info"'';
});
in
{
options.home.roles.development = {
enable = mkEnableOption "Enable development tools and utilities";
allowArbitraryClaudeCodeModelSelection = mkOption {
type = types.bool;
default = false;
description = ''
Whether to preserve model specifications in Claude Code humanlayer commands and agents.
When false (default), the model: line is stripped from frontmatter, allowing Claude Code
to use its default model selection.
When true, the model: specifications from the source files are preserved, allowing
commands to specify opus/sonnet/haiku explicitly.
'';
};
};
config = mkIf cfg.enable {
home.packages = [
pkgs.unstable.claude-code
pkgs.unstable.codex
pkgs.sqlite
# Custom packages
pkgs.custom.tea-rbw
pkgs.custom.pi-coding-agent
];
# Install Claude Code humanlayer command and agent plugins
home.activation.claudeCodeCommands = lib.hm.dag.entryAfter ["writeBoundary"] ''
# Clean up old plugin-installed commands and agents to avoid duplicates
rm -f ~/.claude/commands/humanlayer:* 2>/dev/null || true
rm -f ~/.claude/agents/humanlayer:* 2>/dev/null || true
# Remove explicitly blocked commands that may have been installed previously
rm -f ~/.claude/commands/humanlayer:create_handoff.md 2>/dev/null || true
# Create directories if they don't exist
mkdir -p ~/.claude/commands
mkdir -p ~/.claude/agents
# Copy all humanlayer command files and remove model specifications
for file in ${claudePluginsRepo}/humanlayer/commands/*.md; do
if [ -f "$file" ]; then
filename=$(basename "$file" .md)
# Skip blocked commands
case "$filename" in
create_handoff) continue ;;
esac
dest="$HOME/.claude/commands/humanlayer:''${filename}.md"
rm -f "$dest" 2>/dev/null || true
# Copy file and conditionally remove the "model:" line from frontmatter
${if cfg.allowArbitraryClaudeCodeModelSelection
then "cp \"$file\" \"$dest\""
else "${pkgs.gnused}/bin/sed '/^model:/d' \"$file\" > \"$dest\""
}
chmod u+w "$dest" 2>/dev/null || true
fi
done
# Copy all humanlayer agent files and remove model specifications
for file in ${claudePluginsRepo}/humanlayer/agents/*.md; do
if [ -f "$file" ]; then
filename=$(basename "$file" .md)
dest="$HOME/.claude/agents/humanlayer:''${filename}.md"
rm -f "$dest" 2>/dev/null || true
# Copy file and conditionally remove the "model:" line from frontmatter
${if cfg.allowArbitraryClaudeCodeModelSelection
then "cp \"$file\" \"$dest\""
else "${pkgs.gnused}/bin/sed '/^model:/d' \"$file\" > \"$dest\""
}
chmod u+w "$dest" 2>/dev/null || true
fi
done
$DRY_RUN_CMD echo "Claude Code plugins installed: humanlayer commands/agents"
'';
# Configure Claude Code statusline (merge into existing settings.json)
home.activation.claudeCodeStatusLine = lib.hm.dag.entryAfter ["writeBoundary"] ''
SETTINGS="$HOME/.claude/settings.json"
mkdir -p "$HOME/.claude"
if [ -f "$SETTINGS" ]; then
${pkgs.jq}/bin/jq --slurpfile sl ${claudeCodeStatusLineConfig} '.statusLine = $sl[0]' "$SETTINGS" > "''${SETTINGS}.tmp" && mv "''${SETTINGS}.tmp" "$SETTINGS"
else
${pkgs.jq}/bin/jq -n --slurpfile sl ${claudeCodeStatusLineConfig} '{statusLine: $sl[0]}' > "$SETTINGS"
fi
$DRY_RUN_CMD echo "Claude Code statusline configured"
'';
# Note: modules must be imported at top-level home config
};
}