From 0b050561851d261ba08ad84cc1b7f367a6e2bd1e Mon Sep 17 00:00:00 2001
From: Melvillian <alex.melville@uniswap.org>
Date: Thu, 13 Nov 2025 14:06:53 -0500
Subject: [PATCH] fix: fix setup_lima when run on a mac

Prior to this commit, env_wrapper's 'setup_lima' command would only work for Linux
because it uses the 'nproc' and 'free' shell commands, which do not exist on Mac.
Now, the script detects the platform and uses the appropriate shell commands
---
 scripts/env_wrapper.sh | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/scripts/env_wrapper.sh b/scripts/env_wrapper.sh
index e50ec45..a892220 100755
--- a/scripts/env_wrapper.sh
+++ b/scripts/env_wrapper.sh
@@ -22,8 +22,25 @@ setup_lima() {
         exit 1
     fi
 
-    LIMA_CPUS="${LIMA_CPUS:-$( nproc )}"
-    LIMA_MEMORY="${LIMA_MEMORY:-$( free -g | awk '/^Mem:/ {print $2-2 }' )}"
+    # Detect CPU count (cross-platform)
+    if command -v nproc &>/dev/null; then
+        LIMA_CPUS="${LIMA_CPUS:-$( nproc )}"
+    elif [[ "$OSTYPE" == "darwin"* ]]; then
+        LIMA_CPUS="${LIMA_CPUS:-$( sysctl -n hw.ncpu )}"
+    else
+        LIMA_CPUS="${LIMA_CPUS:-2}"  # Fallback
+    fi
+    
+    # Detect memory (cross-platform)
+    if command -v free &>/dev/null; then
+        LIMA_MEMORY="${LIMA_MEMORY:-$( free -g | awk '/^Mem:/ {print $2-2 }' )}"
+    elif [[ "$OSTYPE" == "darwin"* ]]; then
+        # sysctl returns bytes, convert to GB and subtract 2GB
+        mem_gb=$(($(sysctl -n hw.memsize) / 1024 / 1024 / 1024 - 2))
+        LIMA_MEMORY="${LIMA_MEMORY:-$mem_gb}"
+    else
+        LIMA_MEMORY="${LIMA_MEMORY:-4}"  # Fallback
+    fi
 
     # Create VM if it doesn't exist
     if ! limactl list "$LIMA_VM" > /dev/null 2>&1; then