1 files changed, 8 insertions, 24 deletions
diff --git a/pkgs/development/coq-modules/coq-bits/default.nix b/pkgs/development/coq-modules/coq-bits/default.nix
index 6cb6bb3c813..f604db4ecdf 100644
--- a/pkgs/development/coq-modules/coq-bits/default.nix
+++ b/pkgs/development/coq-modules/coq-bits/default.nix
@@ -1,34 +1,18 @@
-{ lib, mkCoqDerivation, coq, mathcomp, version ? null }:
+{ lib, mkCoqDerivation, coq, mathcomp-algebra, version ? null }:
 
 with lib; mkCoqDerivation {
   pname = "coq-bits";
   repo = "bits";
   inherit version;
-  defaultVersion =
-    if versions.isGe "8.10" coq.version
-    then "1.1.0"
-    else if versions.isGe "8.7" coq.version
-    then "1.0.0"
-    else null;
+  defaultVersion = with versions; switch coq.coq-version [
+    { case = isGe "8.10"; out = "1.1.0"; }
+    { case = isGe "8.7";  out = "1.0.0"; }
+  ] null;
 
-  release = {
-    "1.0.0" = {
-      rev = "1.0.0";
-      sha256 = "0nv5mdgrd075dpd8bc7h0xc5i95v0pkm0bfyq5rj6ii1s54dwcjl";
-    };
-    "1.1.0" = {
-      rev = "1.1.0";
-      sha256 = "sha256-TCw1kSXeW0ysIdLeNr+EGmpGumEE9i8tinEMp57UXaE=";
-    };
-  };
-
-  extraBuildInputs = [ mathcomp.ssreflect mathcomp.fingroup ];
-  propagatedBuildInputs = [ mathcomp.algebra ];
+  release."1.1.0".sha256 = "sha256-TCw1kSXeW0ysIdLeNr+EGmpGumEE9i8tinEMp57UXaE=";
+  release."1.0.0".sha256 = "0nv5mdgrd075dpd8bc7h0xc5i95v0pkm0bfyq5rj6ii1s54dwcjl";
 
-  installPhase = ''
-    make -f Makefile CoqMakefile
-    make -f CoqMakefile COQLIB=$out/lib/coq/${coq.coq-version}/ install
-  '';
+  propagatedBuildInputs = [ mathcomp-algebra ];
 
   meta = {
     description = "A formalization of bitset operations in Coq";