feat: add brew-config recipe to modify user rc (#388)

usr/share/ublue-os/just/custom.just

@@ -18,10 +18,32 @@ aqua:
   @printf '\n    export PATH="${AQUA_ROOT_DIR:-${XDG_DATA_HOME:-$HOME/.local/share}/aquaproj-aqua}/bin:$PATH"\n'
   @printf '\n=> see https://aquaproj.github.io/docs/tutorial for more info\n'
 
+# Install Homebrew for Linux
 brew:
   echo "Installing homebrew ..."
   /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
 
+# Add Homebrew to shell rc files
+brew-shell:
+  #!/usr/bin/env bash
+  set -euxo pipefail
+  echo "Adding homebrew to shell configuration"
+  if grep -q "linuxbrew" $HOME/.zprofile
+  then
+    echo "Brew configuration already present in .zprofile"
+  else 
+    echo "Adding Brew configuration to .zprofile"
+    echo 'eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"' >> $HOME/.zprofile
+  fi
+  if grep -q "linuxbrew" $HOME/.bash_profile
+  then
+    echo "Brew configuration already present in .bash_profile"
+  else 
+    echo "Adding Brew configuration to .bash_profile"
+    echo 'eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"' >> $HOME/.bash_profile
+  fi
+
+
 cockpit:
   echo 'Enabling Cockpit'
   echo 'PasswordAuthentication yes' | sudo tee /etc/ssh/sshd_config.d/02-enable-passwords.conf