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-rw-r--r--tools/niminst/niminst.nim2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/niminst/niminst.nim b/tools/niminst/niminst.nim
index 6123259f5..99befa92d 100644
--- a/tools/niminst/niminst.nim
+++ b/tools/niminst/niminst.nim
@@ -593,7 +593,7 @@ proc xzDist(c: var ConfigData) =
   let oldDir = getCurrentDir()
   setCurrentDir(tmpDir)
   try:
-    if execShellCmd("tar Jcf $1.tar.xz $1" % proj) != 0:
+    if execShellCmd("XZ_OPT=-9 tar Jcf $1.tar.xz $1" % proj) != 0:
       echo("External program failed")
   finally:
     setCurrentDir(oldDir)