diff --git a/ghc-unix-compat.changes b/ghc-unix-compat.changes
index ea981c6..8d6e984 100644
--- a/ghc-unix-compat.changes
+++ b/ghc-unix-compat.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Thu Sep 29 23:12:17 UTC 2022 - Peter Simons <psimons@suse.com>
+
+- Update unix-compat to version 0.6 revision 1.
+  Upstream has revised the Cabal build instructions on Hackage.
+
 -------------------------------------------------------------------
 Sun May 22 09:02:51 UTC 2022 - Peter Simons <psimons@suse.com>
 
diff --git a/ghc-unix-compat.spec b/ghc-unix-compat.spec
index 10516d7..13b7540 100644
--- a/ghc-unix-compat.spec
+++ b/ghc-unix-compat.spec
@@ -25,6 +25,7 @@ Summary:        Portable POSIX-compatibility layer
 License:        BSD-3-Clause
 URL:            https://hackage.haskell.org/package/%{pkg_name}
 Source0:        https://hackage.haskell.org/package/%{pkg_name}-%{version}/%{pkg_name}-%{version}.tar.gz
+Source1:        https://hackage.haskell.org/package/%{pkg_name}-%{version}/revision/1.cabal#/%{pkg_name}.cabal
 BuildRequires:  ghc-Cabal-devel
 BuildRequires:  ghc-rpm-macros
 BuildRequires:  ghc-unix-devel
@@ -55,6 +56,7 @@ This package provides the Haskell %{pkg_name} library development files.
 
 %prep
 %autosetup -n %{pkg_name}-%{version}
+cp -p %{SOURCE1} %{pkg_name}.cabal
 
 %build
 %ghc_lib_build
diff --git a/unix-compat.cabal b/unix-compat.cabal
new file mode 100644
index 0000000..a319f56
--- /dev/null
+++ b/unix-compat.cabal
@@ -0,0 +1,149 @@
+name:           unix-compat
+version:        0.6
+x-revision: 1
+synopsis:       Portable POSIX-compatibility layer.
+description:    This package provides portable implementations of parts
+                of the unix package. This package re-exports the unix
+                package when available. When it isn't available,
+                portable implementations are used.
+
+homepage:       http://github.com/jacobstanley/unix-compat
+license:        BSD3
+license-file:   LICENSE
+author:         Björn Bringert, Duncan Coutts, Jacob Stanley, Bryan O'Sullivan
+maintainer:     Jacob Stanley <jacob@stanley.io>
+category:       System
+build-type:     Simple
+cabal-version:  >= 1.10
+
+extra-source-files:
+  CHANGELOG.md
+
+source-repository head
+  type:     git
+  location: git@github.com:jacobstanley/unix-compat.git
+
+flag old-time
+  description: build against old-time package
+  default: False
+
+Library
+  default-language: Haskell2010
+  hs-source-dirs: src
+  ghc-options: -Wall
+  build-depends: base == 4.*
+
+  exposed-modules:
+    System.PosixCompat
+    System.PosixCompat.Extensions
+    System.PosixCompat.Files
+    System.PosixCompat.Temp
+    System.PosixCompat.Time
+    System.PosixCompat.Types
+    System.PosixCompat.Unistd
+    System.PosixCompat.User
+
+  if os(windows)
+    c-sources:
+      cbits/HsUname.c
+      cbits/mktemp.c
+
+    extra-libraries: msvcrt
+    build-depends: Win32 >= 2.5.0.0
+    build-depends: filepath >= 1.0 && < 1.5
+
+    if flag(old-time)
+      build-depends: old-time >= 1.0.0.0 && < 1.2.0.0
+      cpp-options: -DOLD_TIME
+
+      if impl(ghc < 7)
+        build-depends: directory == 1.0.*
+        cpp-options: -DDIRECTORY_1_0
+      else
+        build-depends: directory == 1.1.*
+    else
+      build-depends: time >= 1.0 && < 1.13
+      build-depends: directory >= 1.3.1 && < 1.4
+
+    other-modules:
+      System.PosixCompat.Internal.Time
+
+  else
+    build-depends: unix >= 2.6 && < 2.8
+    include-dirs: include
+    includes: HsUnixCompat.h
+    install-includes: HsUnixCompat.h
+    c-sources: cbits/HsUnixCompat.c
+    if os(solaris)
+      cc-options: -DSOLARIS
+
+Test-Suite unix-compat-testsuite
+  default-language: Haskell2010
+  type: exitcode-stdio-1.0
+  hs-source-dirs: tests
+  ghc-options: -Wall
+  main-is: main.hs
+
+  other-modules:
+     MkstempSpec
+     LinksSpec
+
+  -- ghc-options:
+  --   -Wall
+  --   -fwarn-tabs
+  --   -funbox-strict-fields
+  --   -threaded
+  --   -fno-warn-unused-do-bind
+  --   -fno-warn-type-defaults
+
+  -- extensions:
+  --   OverloadedStrings
+  --   ExtendedDefaultRules
+
+  -- if flag(lifted)
+  --    cpp-options: -DLIFTED
+
+  build-depends:
+      unix-compat
+    , base == 4.*
+    , monad-parallel
+    , hspec
+    , HUnit
+    , directory
+    , extra
+    , temporary
+
+  if os(windows)
+    -- c-sources:
+    --   cbits/HsUname.c
+    --   cbits/mktemp.c
+
+    -- extra-libraries: msvcrt
+    -- build-depends: Win32 >= 2.5.0.0
+
+    if flag(old-time)
+      build-depends: old-time >= 1.0.0.0 && < 1.2.0.0
+      cpp-options: -DOLD_TIME
+
+      if impl(ghc < 7)
+        build-depends: directory == 1.0.*
+        cpp-options: -DDIRECTORY_1_0
+      else
+        build-depends: directory == 1.1.*
+    else
+      build-depends: time >= 1.0 && < 1.13
+      build-depends: directory >= 1.3.1 && < 1.4
+
+    -- other-modules:
+    --   System.PosixCompat.Internal.Time
+
+  else
+    -- build-depends: unix >= 2.4 && < 2.9
+    -- include-dirs: include
+    -- includes: HsUnixCompat.h
+    -- install-includes: HsUnixCompat.h
+    -- c-sources: cbits/HsUnixCompat.c
+    if os(solaris)
+      cc-options: -DSOLARIS
+
+    build-depends: directory >= 1.3.1 && < 1.4