Fix

Author: DilumAluthge

src/PackageCompiler.jl

@@ -293,7 +293,7 @@ function ensurecompiled(project, packages, sysimage)
     splitter = Sys.iswindows() ? ';' : ':'
     JULIA_LOAD_PATH = "$project$(splitter)@stdlib"
     @debug "ensurecompiled: running $cmd" JULIA_LOAD_PATH
-    cmd = setenv(cmd, "JULIA_LOAD_PATH" => JULIA_LOAD_PATH, JULIA_PROJECT => project)
+    cmd = setenv(cmd, "JULIA_LOAD_PATH" => JULIA_LOAD_PATH, "JULIA_PROJECT" => project)
     run(cmd)
     return
 end