diff --git a/pkgs/os-specific/linux/syslinux/default.nix b/pkgs/os-specific/linux/syslinux/default.nix
index 03c1f0602728..821d51133087 100644
--- a/pkgs/os-specific/linux/syslinux/default.nix
+++ b/pkgs/os-specific/linux/syslinux/default.nix
@@ -1,53 +1,70 @@
-{ lib, stdenv, fetchgit, fetchurl, fetchpatch, nasm, perl, python3, libuuid, mtools, makeWrapper }:
+{ lib
+, stdenv
+, fetchgit
+, fetchurl
+, libuuid
+, makeWrapper
+, mtools
+, nasm
+, perl
+, python3
+}:
 
 stdenv.mkDerivation {
   pname = "syslinux";
-  version = "unstable-20190207";
+  version = "unstable-2019-02-07";
 
   # This is syslinux-6.04-pre3^1; syslinux-6.04-pre3 fails to run.
   # Same issue here https://www.syslinux.org/archives/2019-February/026330.html
   src = fetchgit {
     url = "https://repo.or.cz/syslinux";
     rev = "b40487005223a78c3bb4c300ef6c436b3f6ec1f7";
-    sha256 = "1acf6byx7i6vz8hq6mra526g8mf7fmfhid211y8nq0v6px7d3aqs";
+    sha256 = "sha256-GqvRTr9mA2yRD0G0CF11x1X0jCgqV4Mh+tvE0/0yjqk=";
     fetchSubmodules = true;
   };
 
   patches = let
-    mkURL = commit: patchName:
-      "https://salsa.debian.org/images-team/syslinux/raw/${commit}/debian/patches/"
-      + patchName;
+    fetchDebianPatch = name: commit: hash:
+      fetchurl {
+        url = "https://salsa.debian.org/images-team/syslinux/raw/"
+              + commit + "/debian/patches/" + name;
+        inherit name hash;
+      };
+    fetchArchlinuxPatch = name: commit: hash:
+      fetchurl {
+        url = "https://raw.githubusercontent.com/archlinux/svntogit-packages/"
+              + commit + "/trunk/" + name;
+        inherit name hash;
+      };
   in [
-    (fetchurl {
-      url = mkURL "fa1349f1" "0002-gfxboot-menu-label.patch";
-      sha256 = "06ifgzbpjj4picpj17zgprsfi501zf4pp85qjjgn29i5rs291zni";
-    })
-    (fetchurl {
-      url = "https://raw.githubusercontent.com/archlinux/svntogit-packages/821c3da473d1399d930d5b4a086e46a4179eaa45/trunk/0005-gnu-efi-version-compatibility.patch";
-      name = "0005-gnu-efi-version-compatibility.patch";
-      sha256 = "1mz2idg8cwn0mvd3jixxynhkn7rhmi5fp8cc8zznh5f0ysfra446";
-    })
-    (fetchurl {
-      url = "https://raw.githubusercontent.com/archlinux/svntogit-packages/821c3da473d1399d930d5b4a086e46a4179eaa45/trunk/0025-reproducible-build.patch";
-      name = "0025-reproducible-build.patch";
-      sha256 = "0qk6wc6z3648828y3961pn4pi7xhd20a6fqn6z1mnj22bbvzcxls";
-    })
-    (fetchurl {
+    ./gcc10.patch
+    (fetchDebianPatch
+      "0002-gfxboot-menu-label.patch"
+      "fa1349f1"
+      "sha256-0f6QhM4lJmGflLige4n7AZTodL7vnyAvi5dIedd/Lho=")
+    (fetchArchlinuxPatch
+      "0005-gnu-efi-version-compatibility.patch"
+      "821c3da473d1399d930d5b4a086e46a4179eaa45"
+      "sha256-hhCVnfbAFWj/R4yh60qsMB87ofW9RznarsByhl6L4tc=")
+    (fetchArchlinuxPatch
+      "0025-reproducible-build.patch"
+      "821c3da473d1399d930d5b4a086e46a4179eaa45"
+      "sha256-mnb291pCSFvDNxY7o4BosJ94ib3BpOGRQIiY8Q3jZmI=")
+    (fetchDebianPatch
       # mbr.bin: too big (452 > 440)
       # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=906414
-      url = mkURL "7468ef0e38c43" "0016-strip-gnu-property.patch";
-      sha256 = "17n63b8wz6szv8npla1234g1ip7lqgzx2whrpv358ppf67lq8vwm";
-    })
-    (fetchurl {
+      "0016-strip-gnu-property.patch"
+      "7468ef0e38c43"
+      "sha256-lW+E6THuXlTGvhly0f/D9NwYHhkiKHot2l+bz9Eaxp4=")
+    (fetchDebianPatch
       # mbr.bin: too big (452 > 440)
-      url = mkURL "012e1dd312eb" "0017-single-load-segment.patch";
-      sha256 = "0azqzicsjw47b9ppyikhzaqmjl4lrvkxris1356bkmgcaiv6d98b";
-    })
-    (fetchurl {
-      url = mkURL "26f0e7b2" "0018-prevent-pow-optimization.patch";
-      sha256 = "1c8g0jz5yj9a0rsmryx9vdjsw4hw8mjfcg05c9pmyjg85w3dfp3m";
-    })
-    ./gcc10.patch
+      "0017-single-load-segment.patch"
+      "012e1dd312eb"
+      "sha256-C6VmdlTs1blMGUHH3OfOlFBZsfpwRn9vWodwqVn8+Cs=")
+    (fetchDebianPatch
+      "0018-prevent-pow-optimization.patch"
+      "26f0e7b2"
+      "sha256-dVzXBi/oSV9vYgU85mRFHBKuZdup+1x1BipJX74ED7E=")
   ];
 
   postPatch = ''
@@ -63,10 +80,20 @@ stdenv.mkDerivation {
     touch gnu-efi/inc/ia32/gnu/stubs-32.h
   '';
 
-  nativeBuildInputs = [ nasm perl python3 makeWrapper ];
-  buildInputs = [ libuuid ];
+  nativeBuildInputs = [
+    nasm
+    perl
+    python3
+    makeWrapper
+  ];
+
+  buildInputs = [
+    libuuid
+  ];
+
+  # Fails very rarely with 'No rule to make target: ...'
+  enableParallelBuilding = false;
 
-  enableParallelBuilding = false; # Fails very rarely with 'No rule to make target: ...'
   hardeningDisable = [ "pic" "stackprotector" "fortify" ];
 
   stripDebugList = [ "bin" "sbin" "share/syslinux/com32" ];
@@ -85,9 +112,10 @@ stdenv.mkDerivation {
     "PERL=perl"
     "HEXDATE=0x00000000"
   ]
-    ++ lib.optionals stdenv.hostPlatform.isi686 [ "bios" "efi32" ];
+  ++ lib.optionals stdenv.hostPlatform.isi686 [ "bios" "efi32" ];
 
-  doCheck = false; # fails. some fail in a sandbox, others require qemu
+  # Some tests require qemu, some others fail in a sandboxed environment
+  doCheck = false;
 
   postInstall = ''
     wrapProgram $out/bin/syslinux \
@@ -100,7 +128,7 @@ stdenv.mkDerivation {
   meta = with lib; {
     homepage = "http://www.syslinux.org/";
     description = "A lightweight bootloader";
-    license = licenses.gpl2;
+    license = licenses.gpl2Plus;
     maintainers = [ maintainers.samueldr ];
     platforms = [ "i686-linux" "x86_64-linux" ];
   };