diff --git a/build-constraints.yaml b/build-constraints.yaml
index 84ce38fb..035d2306 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -153,7 +153,7 @@ packages:
         # - text-generic-pretty # GHC 8.2.1 via ixset-typed
 
     "Li-yao Xia <lysxia@gmail.com> @Lysxia":
-        - boltzmann-samplers
+        # - boltzmann-samplers # https://github.com/albertoruiz/hmatrix/issues/232
         - generic-random
 
     "Tobias Dammers <tdammers@gmail.com> @tdammers":
@@ -1545,7 +1545,7 @@ packages:
         # - mbox # GHC 8.2.1
         - kmeans
         - boolsimplifier
-        - cubicspline
+        # - cubicspline # https://github.com/albertoruiz/hmatrix/issues/232
         - maximal-cliques
 
     "Alexander Bondarenko <aenor.realm@gmail.com> @wiz":
@@ -1557,9 +1557,9 @@ packages:
         - generics-sop
 
     "Vivian McPhail <haskell.vivian.mcphail@gmail.com> @amcphail":
-        - hmatrix-gsl-stats
-        - hsignal
-        - hstatistics
+        # - hmatrix-gsl-stats # https://github.com/albertoruiz/hmatrix/issues/232
+        # - hsignal # https://github.com/albertoruiz/hmatrix/issues/232
+        # - hstatistics # https://github.com/albertoruiz/hmatrix/issues/232
         # - plot # Cabal 2.0.0.2
         # - plot-gtk # Cabal 2.0.0.2
         # - plot-gtk3 # Cabal 2.0.0.2
@@ -1745,9 +1745,9 @@ packages:
 
     "Justin Le <justin@jle.im> @mstksg":
         - auto
-        - backprop
+        # - backprop # https://github.com/albertoruiz/hmatrix/issues/232
         - configurator-export
-        - hamilton
+        # - hamilton # https://github.com/albertoruiz/hmatrix/issues/232
         - prompt
         # - tagged-binary # https://github.com/mstksg/tagged-binary/issues/2
         - typelits-witnesses
@@ -2980,7 +2980,7 @@ packages:
         # - language-python # https://github.com/bjpop/language-python/issues/35
 
     "Mahdi Dibaiee <mdibaiee@aol.com>":
-        - picedit
+        # - picedit # https://github.com/albertoruiz/hmatrix/issues/232
         - mathexpr
         # - sibe # GHC 8.2.1 via stemmer
         - termcolor
@@ -3236,7 +3236,7 @@ packages:
 
     "Alexander Ignatyev <ignatyev.alexander@gmail.com> @alexander-ignatyev":
         - astro
-        - mltool
+        # - mltool # https://github.com/albertoruiz/hmatrix/issues/232
 
     "Edward Amsden <edwardamsden@gmail.com> @eamsden":
         - h2c