Corrected one of the entries just added for ignoring unused layer:
purpose pairs in magic.
diff --git a/sky130/magic/sky130.tech b/sky130/magic/sky130.tech
index 65892c3..121c5ca 100644
--- a/sky130/magic/sky130.tech
+++ b/sky130/magic/sky130.tech
@@ -2377,7 +2377,6 @@
#ifndef METAL5
ignore MET4,VIA3
ignore MET5,VIA4
- ignore MET5BLOCK
#endif
ignore NPC
ignore SEALID
@@ -2387,6 +2386,7 @@
ignore POLYMOD
ignore LOWTAPDENSITY
ignore FILLOBSPOLY
+ ignore MET5BLOCK
ignore OUTLINE
ignore POLYCUT
ignore POLYGATE