Make brew path configurable in BrewInfo (#358)

Co-authored-by: doiken <doiken@users.noreply.github.com>

Author: doiken

Source/BrewInfo.spoon/init.lua

@@ -22,6 +22,11 @@ mod.author = "Diego Zamboni <diego@zzamboni.org>"
 mod.homepage = "https://github.com/Hammerspoon/Spoons"
 mod.license = "MIT - https://opensource.org/licenses/MIT"
 
+--- BrewInfo.brew_path
+--- Variable
+--- A string specifying the path to the `brew` executable. Defaults to `/usr/local/bin/brew`
+mod.brew_path = "/usr/local/bin/brew"
+
 --- BrewInfo.brew_info_delay_sec
 --- Variable
 --- An integer specifying how long the alerts generated by BrewInfo will stay onscreen
@@ -95,7 +100,7 @@ function mod:showBrewInfo(pkg, subcommand)
    local info = "No package selected"
    local st = nil
    if pkg and pkg ~= "" then
-      local cmd=string.format("/usr/local/bin/brew %s info %s", subcommand or "", pkg)
+      local cmd=string.format("%s %s info %s", self.brew_path, subcommand or "", pkg)
       info, st=hs.execute(cmd)
       if st == nil then
          info = "No information found about formula '" .. pkg .. "'!"
@@ -131,7 +136,7 @@ end
 function mod:openBrewURL(pkg, subcommand)
    local msg = "No package selected"
    if pkg and pkg ~= "" then
-      local j, st, t, rc=hs.execute(string.format("/usr/local/bin/brew %s cat %s",(subcommand or ""), pkg ))
+      local j, st, t, rc=hs.execute(string.format("%s %s cat %s", self.brew_path, (subcommand or ""), pkg ))
       if st ~= nil then
          local url=string.match(j, "\n%s*homepage%s+['\"](.-)['\"]%s*\n")
          if url and url ~= "" then