diff --git a/goredo/default.nix b/goredo/default.nix
index 3d66406..4c9d046 100644
--- a/goredo/default.nix
+++ b/goredo/default.nix
@@ -1,4 +1,5 @@
-{ buildGoModule, fetchurl, lib, zstd }:
+{ buildGoModule, fetchurl, lib, zstd
+, sharness, python3, perl }:
 
 buildGoModule rec {
   pname = "goredo";
@@ -9,16 +10,29 @@ buildGoModule rec {
     sha256 = "Wc+QIrkrsGA35KeI2UmYOUiyU78ItPQGCKpZO/vndxM=";
   };
 
-  nativeBuildInputs = [ zstd ];
+  patches = [ ./fix-tests.diff ];
+
+  nativeBuildInputs = [ zstd ] ++ lib.optionals doCheck [ python3 perl ];
+  SHARNESS_TEST_SRCDIR = sharness + "/share/sharness";
 
   vendorSha256 = null;
   subPackages = [ "." ];
 
-  postPatch = "cd src";
+  preBuild = "cd src";
+  postBuild = ''
+    ( cd $GOPATH/bin; ./goredo -symlinks )
+    cd ..
+  '';
+
+  doCheck = true;
+  checkPhase = ''
+    export PATH=$GOPATH/bin:$PATH
+    prove -f
+  '';
+
   postInstall = ''
     mkdir -p "$out/share/info"
-    cp ../goredo.info "$out/share/info"
-    ( cd $out/bin; ./goredo -symlinks )
+    cp goredo.info "$out/share/info"
   '';
 
   outputs = [ "out" "info" ];
diff --git a/goredo/fix-tests.diff b/goredo/fix-tests.diff
new file mode 100644
index 0000000..dd75487
--- /dev/null
+++ b/goredo/fix-tests.diff
@@ -0,0 +1,36 @@
+diff -ur goredo-1.4.1/t/apenwarr/105-sympath/all.do goredo-1.4.1.new/t/apenwarr/105-sympath/all.do
+--- goredo-1.4.1/t/apenwarr/105-sympath/all.do	2021-04-29 14:03:11.000000000 +0200
++++ goredo-1.4.1.new/t/apenwarr/105-sympath/all.do	2021-05-10 15:04:46.912799930 +0200
+@@ -11,12 +11,13 @@
+ 	(
+ 		cd y/x/x/x/x/x
+ 		IFS=$(printf '\n')
++		_wd=$(env pwd)
+ 		redo-ifchange static x/x/x/static $PWD/static \
+-			$(/bin/pwd)/static /etc/passwd
++			$_wd/static /etc/passwd
+ 		# goredo: that symlink path is not resolving even at OS level
+ 		# redo-ifchange $PWD/../static 2>/dev/null && exit 35
+ 		redo-ifchange 1.dyn x/x/x/2.dyn $PWD/3.dyn \
+-			 $PWD/../4.dyn $(/bin/pwd)/5.dyn
++			 $PWD/../4.dyn $_wd/5.dyn
+ 	)
+ 	[ -e y/1.dyn ] || exit $((iter + 1))
+ 	[ -e y/2.dyn ] || exit $((iter + 2))
+diff -ur goredo-1.4.1/t/apenwarr/clean.do goredo-1.4.1.new/t/apenwarr/clean.do
+--- goredo-1.4.1/t/apenwarr/clean.do	2021-04-29 14:03:11.000000000 +0200
++++ goredo-1.4.1.new/t/apenwarr/clean.do	2021-05-10 15:06:07.099591609 +0200
+@@ -1,3 +1,3 @@
+-/bin/ls [0-9s][0-9][0-9]*/clean.do |
++env ls [0-9s][0-9][0-9]*/clean.do |
+ sed 's/\.do$//' |
+ xargs redo
+diff -ur goredo-1.4.1/t/redo-sh.tests/clean.do goredo-1.4.1.new/t/redo-sh.tests/clean.do
+--- goredo-1.4.1/t/redo-sh.tests/clean.do	2021-04-29 14:03:11.000000000 +0200
++++ goredo-1.4.1.new/t/redo-sh.tests/clean.do	2021-05-10 15:02:41.607562802 +0200
+@@ -1,4 +1,4 @@
+ for f in * ; do
+     [ -d $f ] || continue
+-    find $f ! -name test -delete
++    find $f ! -name test -delete || true
+ done