diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm
index a3ce2a3e4c..9433ae0570 100644
--- a/gnu/packages/haskell.scm
+++ b/gnu/packages/haskell.scm
@@ -3,7 +3,7 @@
 ;;; Copyright © 2015 Siniša Biđin <sinisa@bidin.eu>
 ;;; Copyright © 2015 Paul van der Walt <paul@denknerd.org>
 ;;; Copyright © 2015 Eric Bavier <bavier@member.fsf.org>
-;;; Copyright © 2016, 2018 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2016, 2018, 2019 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2016, 2017 Nils Gillmann <ng0@n0.is>
 ;;; Copyright © 2016 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2015, 2016, 2017, 2018, 2019 Ricardo Wurmus <rekado@elephly.net>
@@ -3790,8 +3790,6 @@ writing to stdout and other handles.")
         (base32
          "1qrpxfirsxckg7jv28f5ah2qc8lh95hp7rnqkbqs1ahcwlbnvkm7"))))
     (build-system haskell-build-system)
-    (inputs
-     `(("ghc-hunit" ,ghc-hunit)))
     ;; these inputs are necessary to use this library
     (inputs
      `(("ghc-text" ,ghc-text)
diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index 83753c55f0..35ac4e69f5 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -1,6 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2013 Nikita Karetnikov <nikita@karetnikov.org>
-;;; Copyright © 2013, 2014, 2015, 2016, 2017, 2018 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2013, 2014, 2015, 2016, 2017, 2018, 2019 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2013, 2014, 2015, 2016 Andreas Enge <andreas@enge.fr>
 ;;; Copyright © 2014, 2015 Mark H Weaver <mhw@netris.org>
 ;;; Copyright © 2014, 2017 Eric Bavier <bavier@member.fsf.org>
@@ -3391,8 +3391,6 @@ toolkits.")
      `(("python2-numpy" ,python2-numpy)
        ("python2-scipy" ,python2-scipy)
        ("python2-pandas" ,python2-pandas)))
-    (native-inputs
-     `(("python2-cython" ,python2-cython)))
     (native-inputs
      `(("unzip" ,unzip)))
     (home-page "http://research.microsoft.com/en-us/um/redmond/projects/mscompbio/")
diff --git a/gnu/tests/install.scm b/gnu/tests/install.scm
index 7114e5cc79..ec29064118 100644
--- a/gnu/tests/install.scm
+++ b/gnu/tests/install.scm
@@ -1,5 +1,5 @@
 ;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2016, 2017, 2018 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2016, 2017, 2018, 2019 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2017 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;;
 ;;; This file is part of GNU Guix.
@@ -430,7 +430,6 @@ reboot\n")
                            (type "ext4"))
                          (file-system
                            (device "none")
-                           (type "tmpfs")
                            (mount-point "/home")
                            (type "tmpfs"))
                          %base-file-systems))