# HG changeset patch
# User Augie Fackler <raf@durin42.com>
# Date 1668440429 18000
# Node ID 24f7a481d284d645fd1f34d76b595001cc512f1c
# Parent  a5a4f9e12c9faf350343a0adb530987db7e030b7
shell: cache openssl prefix from homebrew

Turns out homebrew costs about 800ms to figure this out, experimentally. :(

diff --git a/.shell.d/99.openssl.sh b/.shell.d/99.openssl.sh
--- a/.shell.d/99.openssl.sh
+++ b/.shell.d/99.openssl.sh
@@ -1,5 +1,14 @@
 if hash brew 2>/dev/null ; then
-    export OPENSSL_INCLUDE_DIR=`brew --prefix openssl`/include
-    export OPENSSL_LIB_DIR=`brew --prefix openssl`/lib
-    export DEP_OPENSSL_INCLUDE=`brew --prefix openssl`/include
+    BREW_SSL_PREFIX_CACHE_FILE="${XDG_CACHE_HOME:-$HOME/.cache}/durin42-zsh/brew-openssl-prefix"
+    if [ -e "$BREW_SSL_PREFIX_CACHE_FILE" ] ; then
+        BREW_OPENSSL_PREFIX="$(cat $BREW_SSL_PREFIX_CACHE_FILE)"
+    fi
+    if [ -z "$BREW_OPENSSL_PREFIX" -o ! -d "$BREW_OPENSSL_PREFIX" ] ; then
+        BREW_OPENSSL_PREFIX="$(brew --prefix openssl)"
+        mkdir -p "$(dirname $BREW_SSL_PREFIX_CACHE_FILE)"
+        echo "$BREW_OPENSSL_PREFIX" > "$BREW_SSL_PREFIX_CACHE_FILE"
+    fi
+    export OPENSSL_INCLUDE_DIR="${BREW_OPENSSL_PREFIX}/include"
+    export OPENSSL_LIB_DIR="${BREW_OPENSSL_PREFIX}/lib"
+    export DEP_OPENSSL_INCLUDE="${BREW_OPENSSL_PREFIX}/include"
 fi