diff --git a/ghc-integer-logarithms.spec b/ghc-integer-logarithms.spec
index 689b559..b924215 100644
--- a/ghc-integer-logarithms.spec
+++ b/ghc-integer-logarithms.spec
@@ -15,6 +15,7 @@ License:        MIT
 Url:            https://hackage.haskell.org/package/%{pkg_name}
 # Begin cabal-rpm sources:
 Source0:        https://hackage.haskell.org/package/%{pkgver}/%{pkgver}.tar.gz
+Source1:        https://hackage.haskell.org/package/%{pkgver}/%{pkg_name}.cabal#/%{pkgver}.cabal
 # End cabal-rpm sources
 
 # Begin cabal-rpm deps:
@@ -71,6 +72,7 @@ This package provides the Haskell %{pkg_name} profiling library.
 %prep
 # Begin cabal-rpm setup:
 %setup -q -n %{pkgver}
+cp -bp %{SOURCE1} %{pkg_name}.cabal
 chmod a-x changelog.md readme.md
 # End cabal-rpm setup
 
diff --git a/integer-logarithms-1.0.3.cabal b/integer-logarithms-1.0.3.cabal
new file mode 100644
index 0000000..01e7177
--- /dev/null
+++ b/integer-logarithms-1.0.3.cabal
@@ -0,0 +1,115 @@
+name:               integer-logarithms
+version:            1.0.3
+x-revision:         2
+cabal-version:      >= 1.10
+author:             Daniel Fischer
+copyright:          (c) 2011 Daniel Fischer
+license:            MIT
+license-file:       LICENSE
+maintainer:         Oleg Grenrus <oleg.grenrus@iki.fi>
+build-type:         Simple
+stability:          Provisional
+homepage:           https://github.com/Bodigrim/integer-logarithms
+bug-reports:        https://github.com/Bodigrim/integer-logarithms/issues
+
+synopsis:           Integer logarithms.
+description:
+  "Math.NumberTheory.Logarithms" and "Math.NumberTheory.Powers.Integer"
+  from the arithmoi package.
+  .
+  Also provides "GHC.Integer.Logarithms.Compat" and
+  "Math.NumberTheory.Power.Natural" modules, as well as some
+  additional functions in migrated modules.
+
+category:           Math, Algorithms, Number Theory
+
+tested-with:
+  GHC==7.0.4,
+  GHC==7.2.2,
+  GHC==7.4.2,
+  GHC==7.6.3,
+  GHC==7.8.4,
+  GHC==7.10.3,
+  GHC==8.0.2,
+  GHC==8.2.2,
+  GHC==8.4.4,
+  GHC==8.6.5,
+  GHC==8.8.2,
+  GHC==8.10.2
+
+extra-source-files  : readme.md changelog.md
+
+flag integer-gmp
+  description:  integer-gmp or integer-simple
+  default:      True
+  manual:       False
+
+flag check-bounds
+  description:  Replace unsafe array operations with safe ones
+  default:      False
+  manual:       True
+
+library
+  default-language: Haskell2010
+  hs-source-dirs: src
+  build-depends:
+    base >= 4.3 && < 4.15,
+    array >= 0.3 && < 0.6,
+    ghc-prim < 0.7
+
+  if !impl(ghc >= 7.10)
+    build-depends: nats >= 1.1.2 && <1.2
+
+  if flag(integer-gmp)
+    build-depends:
+      integer-gmp < 1.1
+  else
+    build-depends:
+      integer-simple
+
+  exposed-modules:
+    Math.NumberTheory.Logarithms
+    Math.NumberTheory.Powers.Integer
+    Math.NumberTheory.Powers.Natural
+    GHC.Integer.Logarithms.Compat
+  other-extensions:
+    BangPatterns
+    CPP
+    MagicHash
+
+  ghc-options: -O2 -Wall
+  if flag(check-bounds)
+    cpp-options: -DCheckBounds
+
+source-repository head
+  type:     git
+  location: https://github.com/Bodigrim/integer-logarithms
+
+test-suite spec
+  type:                 exitcode-stdio-1.0
+  hs-source-dirs:       test-suite
+  ghc-options:          -Wall
+  main-is:              Test.hs
+  default-language:     Haskell2010
+  other-extensions:
+    StandaloneDeriving
+    FlexibleContexts
+    FlexibleInstances
+    GeneralizedNewtypeDeriving
+    MultiParamTypeClasses
+  build-depends:
+    base,
+    integer-logarithms,
+    tasty >= 0.10 && < 1.3,
+    tasty-smallcheck >= 0.8 && < 0.9,
+    tasty-quickcheck >= 0.8 && < 0.11,
+    tasty-hunit >= 0.9 && < 0.11,
+    QuickCheck >= 2.10 && < 2.14,
+    smallcheck >= 1.1.3 && < 1.2
+  if !impl(ghc >= 7.10)
+    build-depends: nats >= 1.1 && <1.2
+
+  other-modules:
+    Math.NumberTheory.LogarithmsTests
+    Math.NumberTheory.TestUtils
+    Orphans