diff --git a/build-constraints.yaml b/build-constraints.yaml
index 60661115..7e7c4028 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1012,7 +1012,7 @@ packages:
         - envparse
 
     "Luis G. Torres <lgtorres42@gmail.com> @giogadi":
-        - kdt
+        - kdt < 0 # via heap
 
     "Pavel Krajcevski <krajcevski@gmail.com> @Mokosha":
         - netwire
@@ -2119,7 +2119,7 @@ packages:
 
     "Gregory W. Schwartz <gregory.schwartz@drexel.edu> @GregorySchwartz":
         - fasta
-        - diversity
+        - diversity < 0 # via fasta
         - modify-fasta
         - tree-fun
         - random-tree
@@ -3862,23 +3862,11 @@ packages:
         - type-assertions < 0 # GHC 8.4 via test-fixture
         - threepenny-editors < 0 # GHC 8.4 via threepenny-gui
         - threepenny-gui-flexbox < 0 # GHC 8.4 via threepenny-gui
-        - MonadRandom < 0 # GHC 8.4 via transformers-compat-0.6.0.6
         - exception-transformers < 0 # GHC 8.4 via transformers-compat-0.6.0.6
         - monad-control-aligned < 0 # GHC 8.4 via transformers-compat-0.6.0.6
 
         # trans deps, gen 2
         - netwire-input-glfw < 0 # GHC 8.4 via GLFW-b
-        - auto < 0 # GHC 8.4 via MonadRandom
-        - boltzmann-samplers < 0 # GHC 8.4 via MonadRandom
-        - distribution < 0 # GHC 8.4 via MonadRandom
-        - diversity < 0 # GHC 8.4 via MonadRandom
-        - general-games < 0 # GHC 8.4 via MonadRandom
-        - hmatrix-morpheus < 0 # GHC 8.4 via MonadRandom
-        - kdt < 0 # GHC 8.4 via MonadRandom
-        - mltool < 0 # GHC 8.4 via MonadRandom
-        - random-shuffle < 0 # GHC 8.4 via MonadRandom
-        - random-tree < 0 # GHC 8.4 via MonadRandom
-        - vivid < 0 # GHC 8.4 via MonadRandom
         - hledger-ui < 0 # GHC 8.4 via hinotify (transitive dep of fsnotify)
         - Chart-cairo < 0 # GHC 8.4 via cairo
         - plot < 0 # GHC 8.4 via cairo