Implement Homebrew support

.installer/packages

@@ -14,4 +14,6 @@ apt-laptop:brightnessctl
 apt-any:libxcb-render0-dev,libffi-dev,python3-dev,python3-cffi
 pip-any:flashfocus
 
+brew-formulas-any:helm,shellcheck,velero,azure/kubelogin/kubelogin,derailed/k9s/k9s,fluxcd/tap/flux,weaveworks/tap/gitops
+
 krew-any:ctx,krew,ns,slice,stern,tree

setup_system.sh

@@ -130,6 +130,44 @@ function install_picom() {
     rm -Rf "$tmp"
 }
 
+function setup_homebrew() {
+    local dir="$HOME/homebrew"
+
+    echo "Setting up Homebrew."
+
+    if [ ! -d "$dir" ]; then
+        echo "Homebrew is already installed."
+        mkdir "$dir" || return 1
+        curl -L https://github.com/Homebrew/brew/tarball/master | tar xz --strip 1 -C "$dir" || return 2
+    fi
+
+    echo "Updating Homebrew."
+    eval "$("$dir/bin/brew" shellenv)"
+    brew update --force
+    chmod -R go-w "$(brew --prefix)/share/zsh"
+}
+
+function setup_brew_formulas() {
+    local targets=("brew-formulas-any") packages
+
+    brew update || return 1
+
+    for package in $(get_packages "${targets[@]}"); do
+        if brew list --full-name | grep -Eq "(^| )$package($| )" >/dev/null; then
+            if $UPGRADE_PACKAGES; then
+                echo "Package '$package' will be upgraded."
+                brew upgrade "$package" || return 2
+            else
+                echo "Package '$package' already exists."
+                continue
+            fi
+        else
+            echo "Package '$package' will be installed."
+            brew install "$package" || return 2
+        fi
+    done
+}
+
 function setup_krew_plugins() {
     local targets=("krew-any") packages
 
@@ -207,7 +245,9 @@ function setup_arch() {
     setup_arch_with_pip || return 4
     configure_sddm || return 5
     configure_ufw || return 6
-    setup_krew_plugins || return 7
+    setup_homebrew || return 7
+    setup_brew_formulas || return 8
+    setup_krew_plugins || return 9
 }
 
 #
@@ -263,7 +303,9 @@ function setup_debian() {
     setup_debian_with_git || return 4
     configure_sddm || return 5
     configure_ufw || return 6
-    setup_krew_plugins || return 7
+    setup_homebrew || return 7
+    setup_brew_formulas || return 8
+    setup_krew_plugins || return 9
 }
 
 ID_LIKE="$(grep ID_LIKE= </etc/os-release | cut -d= -f2)"