From b53fdbe0ef357767ce6eba88696c11d8d403739f Mon Sep 17 00:00:00 2001
From: henrygd <hank@henrygd.me>
Date: Fri, 27 Mar 2026 13:35:04 -0400
Subject: [PATCH] fix(agent): find macmon if /opt/homebrew/bin is not in path
 (#1746)

---
 agent/gpu.go                                  |  2 +-
 agent/gpu_darwin.go                           |  7 ++++-
 agent/smart.go                                | 31 ++++++-------------
 agent/utils/utils.go                          | 24 ++++++++++++++
 .../components/routes/system/smart-table.tsx  | 12 ++++---
 5 files changed, 48 insertions(+), 28 deletions(-)

diff --git a/agent/gpu.go b/agent/gpu.go
index 8a0ffc1b..03c0783e 100644
--- a/agent/gpu.go
+++ b/agent/gpu.go
@@ -461,7 +461,7 @@ func (gm *GPUManager) discoverGpuCapabilities() gpuCapabilities {
 		caps.hasNvtop = true
 	}
 	if runtime.GOOS == "darwin" {
-		if _, err := exec.LookPath(macmonCmd); err == nil {
+		if _, err := utils.LookPathHomebrew(macmonCmd); err == nil {
 			caps.hasMacmon = true
 		}
 		if _, err := exec.LookPath(powermetricsCmd); err == nil {
diff --git a/agent/gpu_darwin.go b/agent/gpu_darwin.go
index a3ba1e1f..5c648f78 100644
--- a/agent/gpu_darwin.go
+++ b/agent/gpu_darwin.go
@@ -13,6 +13,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/henrygd/beszel/agent/utils"
 	"github.com/henrygd/beszel/internal/entities/system"
 )
 
@@ -171,7 +172,11 @@ type macmonSample struct {
 }
 
 func (gm *GPUManager) collectMacmonPipe() (err error) {
-	cmd := exec.Command(macmonCmd, "pipe", "-i", strconv.Itoa(macmonIntervalMs))
+	macmonPath, err := utils.LookPathHomebrew(macmonCmd)
+	if err != nil {
+		return err
+	}
+	cmd := exec.Command(macmonPath, "pipe", "-i", strconv.Itoa(macmonIntervalMs))
 	// Avoid blocking if macmon writes to stderr.
 	cmd.Stderr = io.Discard
 	stdout, err := cmd.StdoutPipe()
diff --git a/agent/smart.go b/agent/smart.go
index 5fbb2c64..b0a10d7a 100644
--- a/agent/smart.go
+++ b/agent/smart.go
@@ -1104,32 +1104,21 @@ func (sm *SmartManager) parseSmartForNvme(output []byte) (bool, int) {
 
 // detectSmartctl checks if smartctl is installed, returns an error if not
 func (sm *SmartManager) detectSmartctl() (string, error) {
-	isWindows := runtime.GOOS == "windows"
-
-	// Load embedded smartctl.exe for Windows amd64 builds.
-	if isWindows && runtime.GOARCH == "amd64" {
-		if path, err := ensureEmbeddedSmartctl(); err == nil {
-			return path, nil
+	if runtime.GOOS == "windows" {
+		// Load embedded smartctl.exe for Windows amd64 builds.
+		if runtime.GOARCH == "amd64" {
+			if path, err := ensureEmbeddedSmartctl(); err == nil {
+				return path, nil
+			}
 		}
-	}
-
-	if path, err := exec.LookPath("smartctl"); err == nil {
-		return path, nil
-	}
-	locations := []string{}
-	if isWindows {
-		locations = append(locations,
-			"C:\\Program Files\\smartmontools\\bin\\smartctl.exe",
-		)
-	} else {
-		locations = append(locations, "/opt/homebrew/bin/smartctl")
-	}
-	for _, location := range locations {
+		// Try to find smartctl in the default installation location
+		const location = "C:\\Program Files\\smartmontools\\bin\\smartctl.exe"
 		if _, err := os.Stat(location); err == nil {
 			return location, nil
 		}
 	}
-	return "", errors.New("smartctl not found")
+
+	return utils.LookPathHomebrew("smartctl")
 }
 
 // isNvmeControllerPath checks if the path matches an NVMe controller pattern
diff --git a/agent/utils/utils.go b/agent/utils/utils.go
index 1941a909..1e682b1e 100644
--- a/agent/utils/utils.go
+++ b/agent/utils/utils.go
@@ -4,6 +4,9 @@ import (
 	"io"
 	"math"
 	"os"
+	"os/exec"
+	"path/filepath"
+	"runtime"
 	"strconv"
 	"strings"
 )
@@ -86,3 +89,24 @@ func ReadUintFile(path string) (uint64, bool) {
 	}
 	return parsed, true
 }
+
+// LookPathHomebrew is like exec.LookPath but also checks Homebrew paths.
+func LookPathHomebrew(file string) (string, error) {
+	foundPath, lookPathErr := exec.LookPath(file)
+	if lookPathErr == nil {
+		return foundPath, nil
+	}
+	var homebrewPath string
+	switch runtime.GOOS {
+	case "darwin":
+		homebrewPath = filepath.Join("/opt", "homebrew", "bin", file)
+	case "linux":
+		homebrewPath = filepath.Join("/home", "linuxbrew", ".linuxbrew", "bin", file)
+	}
+	if homebrewPath != "" {
+		if _, err := os.Stat(homebrewPath); err == nil {
+			return homebrewPath, nil
+		}
+	}
+	return "", lookPathErr
+}
diff --git a/internal/site/src/components/routes/system/smart-table.tsx b/internal/site/src/components/routes/system/smart-table.tsx
index 270c338b..a67a17ed 100644
--- a/internal/site/src/components/routes/system/smart-table.tsx
+++ b/internal/site/src/components/routes/system/smart-table.tsx
@@ -620,11 +620,13 @@ const SmartDevicesTable = memo(function SmartDevicesTable({
 								return <SmartDeviceTableRow key={row.id} row={row} virtualRow={virtualRow} openSheet={openSheet} />
 							})
 						) : (
-							<TableRow>
-								<TableCell colSpan={colLength} className="h-24 text-center pointer-events-none">
-									{data ? t`No results.` : <LoaderCircleIcon className="animate-spin size-10 opacity-60 mx-auto" />}
-								</TableCell>
-							</TableRow>
+							<TableCell colSpan={colLength} className="h-37 text-center pointer-events-none">
+								{data ? (
+									<Trans>No results.</Trans>
+								) : (
+									<LoaderCircleIcon className="animate-spin size-10 opacity-60 mx-auto" />
+								)}
+							</TableCell>
 						)}
 					</TableBody>
 				</table>