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-rw-r--r--compiler/scriptconfig.nim7
1 files changed, 5 insertions, 2 deletions
diff --git a/compiler/scriptconfig.nim b/compiler/scriptconfig.nim
index f3d6ccfdd..659206a40 100644
--- a/compiler/scriptconfig.nim
+++ b/compiler/scriptconfig.nim
@@ -159,8 +159,11 @@ proc runNimScript*(cache: IdentCache; scriptName: string;
 
   defineSymbol(conf.symbols, "nimscript")
   defineSymbol(conf.symbols, "nimconfig")
-  registerPass(graph, semPass)
-  registerPass(graph, evalPass)
+  var registeredPasses {.global.} = false
+  if not registeredPasses:
+    registerPass(graph, semPass)
+    registerPass(graph, evalPass)
+    registeredPasses = true
 
   conf.searchPaths.add(conf.libpath)