deb-update.bash: detect Fedora Atomic patched homebrew

bash/deb-update.bash

@@ -73,9 +73,18 @@ fi
 # https://github.com/Homebrew/brew
 if [[ -d /home/linuxbrew/.linuxbrew/bin && $(id -u) != 0 ]]; then
 	eval $(/home/linuxbrew/.linuxbrew/bin/brew shellenv)
-	/home/linuxbrew/.linuxbrew/bin/brew doctor
+	export HOMEBREW_CELLAR=/home/linuxbrew/.linuxbrew/Cellar
-	/home/linuxbrew/.linuxbrew/bin/brew update --quiet
+	export HOMEBREW_PREFIX=/home/linuxbrew/.linuxbrew
-	/home/linuxbrew/.linuxbrew/bin/brew upgrade --quiet
+	export HOMEBREW_REPOSITORY=/home/linuxbrew/.linuxbrew
+	if [[ -f /home/linuxbrew/.linuxbrew/bin/brew2 ]]; then
+		/home/linuxbrew/.linuxbrew/bin/brew2 doctor
+		/home/linuxbrew/.linuxbrew/bin/brew2 update --quiet
+		/home/linuxbrew/.linuxbrew/bin/brew2 upgrade --quiet
+	else
+		/home/linuxbrew/.linuxbrew/bin/brew doctor
+		/home/linuxbrew/.linuxbrew/bin/brew update --quiet
+		/home/linuxbrew/.linuxbrew/bin/brew upgrade --quiet
+	fi
 else
 	printf "Either linuxbrew is not installed or running as root, skipping linuxbrew...\n"
 fi

bash/usr-local-bin/brew

@@ -0,0 +1 @@
+homebrew

bash/usr-local-bin/homebrew

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+
+# Homebrew workaround particularly for Fedora Atomic.
+# Based on the syncplay script in this folder and the patching idea is from
+# https://github.com/orgs/Homebrew/discussions/1282#discussioncomment-1281288
+
+if [ -d /var/roothome ]; then
+	set -x
+	export LC_ALL=C.utf8
+
+	if [ -f "/tmp/brew.$(id -u).$(date -I)" ]; then
+		echo "Homebrew has been patched today. If this is wrong, rm /tmp/brew.$(id -u).$(date -I)"
+	else
+		if [ ! -d "/home/linuxbrew/.linuxbrew" ]; then
+			echo "Homebrew not found."
+			exit 1
+		fi
+
+		cd /home/linuxbrew/.linuxbrew/bin/
+		cp brew brew2
+		sed -i 's/pwd\ \-P/pwd/g' brew2
+		touch "/tmp/brew.$(id -u).$(date -I)"
+	fi
+
+	env brew2 $@
+	set +x
+else
+	env brew $@
+fi