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diff --git a/pkgs/compatibility-lib/mzlib/awk.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/awk.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/awk.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/awk.rkt diff --git a/pkgs/compatibility-lib/mzlib/class.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/class.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/class.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/class.rkt diff --git a/pkgs/compatibility-lib/mzlib/cm-accomplice.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/cm-accomplice.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/cm-accomplice.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/cm-accomplice.rkt diff --git a/pkgs/compatibility-lib/mzlib/cm.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/cm.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/cm.rkt rename to 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to pkgs/compatibility-pkgs/compatibility-lib/mzlib/port.rkt diff --git a/pkgs/compatibility-lib/mzlib/pregexp.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/pregexp.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/pregexp.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/pregexp.rkt diff --git a/pkgs/compatibility-lib/mzlib/pretty.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/pretty.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/pretty.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/pretty.rkt diff --git a/pkgs/compatibility-lib/mzlib/private/contract-arr-checks.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/private/contract-arr-checks.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/private/contract-arr-checks.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/private/contract-arr-checks.rkt diff --git a/pkgs/compatibility-lib/mzlib/private/contract-arr-obj-helpers.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/private/contract-arr-obj-helpers.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/private/contract-arr-obj-helpers.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/private/contract-arr-obj-helpers.rkt diff --git a/pkgs/compatibility-lib/mzlib/private/contract-arrow.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/private/contract-arrow.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/private/contract-arrow.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/private/contract-arrow.rkt diff --git a/pkgs/compatibility-lib/mzlib/private/contract-define.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/private/contract-define.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/private/contract-define.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/private/contract-define.rkt diff --git a/pkgs/compatibility-lib/mzlib/private/contract-mutable.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/private/contract-mutable.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/private/contract-mutable.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/private/contract-mutable.rkt diff --git a/pkgs/compatibility-lib/mzlib/private/contract-object.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/private/contract-object.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/private/contract-object.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/private/contract-object.rkt diff --git a/pkgs/compatibility-lib/mzlib/private/contract-struct.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/private/contract-struct.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/private/contract-struct.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/private/contract-struct.rkt diff --git a/pkgs/compatibility-lib/mzlib/private/package-helper.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/private/package-helper.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/private/package-helper.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/private/package-helper.rkt diff --git a/pkgs/compatibility-lib/mzlib/private/structure-helper.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/private/structure-helper.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/private/structure-helper.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/private/structure-helper.rkt diff --git a/pkgs/compatibility-lib/mzlib/private/stxparamkey.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/private/stxparamkey.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/private/stxparamkey.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/private/stxparamkey.rkt diff --git a/pkgs/compatibility-lib/mzlib/private/stxset.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/private/stxset.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/private/stxset.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/private/stxset.rkt diff --git a/pkgs/compatibility-lib/mzlib/process.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/process.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/process.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/process.rkt diff --git a/pkgs/compatibility-lib/mzlib/runtime-path.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/runtime-path.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/runtime-path.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/runtime-path.rkt diff --git a/pkgs/compatibility-lib/mzlib/sendevent.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/sendevent.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/sendevent.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/sendevent.rkt diff --git a/pkgs/compatibility-lib/mzlib/serialize.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/serialize.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/serialize.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/serialize.rkt diff --git a/pkgs/compatibility-lib/mzlib/shared.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/shared.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/shared.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/shared.rkt diff --git a/pkgs/compatibility-lib/mzlib/string.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/string.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/string.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/string.rkt diff --git a/pkgs/compatibility-lib/mzlib/struct.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/struct.rkt similarity index 100% rename from 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a/pkgs/compatibility-lib/mzlib/transcr.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/transcr.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/transcr.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/transcr.rkt diff --git a/pkgs/compatibility-lib/mzlib/unit-exptime.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/unit-exptime.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/unit-exptime.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/unit-exptime.rkt diff --git a/pkgs/compatibility-lib/mzlib/unit.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/unit.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/unit.rkt rename to pkgs/compatibility-pkgs/compatibility-lib/mzlib/unit.rkt diff --git a/pkgs/compatibility-lib/mzlib/unitsig.rkt b/pkgs/compatibility-pkgs/compatibility-lib/mzlib/unitsig.rkt similarity index 100% rename from pkgs/compatibility-lib/mzlib/unitsig.rkt rename to 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