diff --git a/pkgs/development/libraries/libsmartcols/default.nix b/pkgs/development/libraries/libsmartcols/default.nix
index bcd1573e203..077055cbb9a 100644
--- a/pkgs/development/libraries/libsmartcols/default.nix
+++ b/pkgs/development/libraries/libsmartcols/default.nix
@@ -1,15 +1,15 @@
 { lib, stdenv, fetchFromGitHub, autoreconfHook, pkg-config, python3, gtk-doc}:
 
 stdenv.mkDerivation rec {
-  name = "libsmartcols";
-  version = "v2.36.1";
+  pname = "libsmartcols";
+  version = "2.36.1";
 
   nativeBuildInputs = [ autoreconfHook pkg-config python3 gtk-doc ];
 
   src = fetchFromGitHub {
     owner = "karelzak";
     repo = "util-linux";
-    rev = version;
+    rev = "v${version}";
     sha256 = "0z7nv054pqhlihqiw0vk3h40j0cxk1yxf8zzh0ddmvk6834cnyxs";
   };
 
diff --git a/pkgs/development/libraries/libsnark/default.nix b/pkgs/development/libraries/libsnark/default.nix
index c3e6d0e049e..37352bf5e3c 100644
--- a/pkgs/development/libraries/libsnark/default.nix
+++ b/pkgs/development/libraries/libsnark/default.nix
@@ -1,10 +1,8 @@
 { lib, stdenv, fetchFromGitHub, cmake, pkg-config, openssl, boost, gmp, procps }:
 
-let
-  rev = "9e6b19ff15bc19fba5da1707ba18e7f160e5ed07";
-in stdenv.mkDerivation rec {
-  name = "libsnark-pre${version}";
-  version = lib.substring 0 8 rev;
+stdenv.mkDerivation rec {
+  pname = "libsnark";
+  version = "unstable-2018-01-15";
 
   nativeBuildInputs = [ cmake pkg-config ];
   buildInputs = [ openssl boost gmp ] ++ lib.optional stdenv.hostPlatform.isLinux procps;
@@ -12,7 +10,7 @@ in stdenv.mkDerivation rec {
   cmakeFlags = lib.optionals stdenv.hostPlatform.isDarwin [ "-DWITH_PROCPS=OFF" "-DWITH_SUPERCOP=OFF" ];
 
   src = fetchFromGitHub {
-    inherit rev;
+    rev = "9e6b19ff15bc19fba5da1707ba18e7f160e5ed07";
     owner           = "scipr-lab";
     repo            = "libsnark";
     sha256          = "13f02qp2fmfhvxlp4xi69m0l8r5nq913l2f0zwdk7hl46lprfdca";
diff --git a/pkgs/development/libraries/libui/default.nix b/pkgs/development/libraries/libui/default.nix
index 7002f75cc45..14fb004187d 100644
--- a/pkgs/development/libraries/libui/default.nix
+++ b/pkgs/development/libraries/libui/default.nix
@@ -1,13 +1,12 @@
 { lib, stdenv, fetchFromGitHub, cmake, pkg-config, gtk3, Cocoa }:
 
 let
-  shortName = "libui";
-  version   = "4.1a";
   backend   = if stdenv.isDarwin then "darwin" else "unix";
 in
 
-stdenv.mkDerivation {
-  name = "${shortName}-${version}";
+stdenv.mkDerivation rec {
+  pname = "libui";
+  version   = "4.1a";
   src  = fetchFromGitHub {
     owner  = "andlabs";
     repo   = "libui";
@@ -27,22 +26,22 @@ stdenv.mkDerivation {
     mkdir -p $out/{include,lib}
     mkdir -p $out/lib/pkgconfig
   '' + lib.optionalString stdenv.isLinux ''
-    mv ./out/${shortName}.so.0 $out/lib/
-    ln -s $out/lib/${shortName}.so.0 $out/lib/${shortName}.so
+    mv ./out/libui.so.0 $out/lib/
+    ln -s $out/lib/libui.so.0 $out/lib/libui.so
   '' + lib.optionalString stdenv.isDarwin ''
-    mv ./out/${shortName}.A.dylib $out/lib/
-    ln -s $out/lib/${shortName}.A.dylib $out/lib/${shortName}.dylib
+    mv ./out/libui.A.dylib $out/lib/
+    ln -s $out/lib/lubui.A.dylib $out/lib/libui.dylib
   '' + ''
     cp $src/ui.h $out/include
     cp $src/ui_${backend}.h $out/include
 
-    cp ${./libui.pc} $out/lib/pkgconfig/${shortName}.pc
-    substituteInPlace $out/lib/pkgconfig/${shortName}.pc \
+    cp ${./libui.pc} $out/lib/pkgconfig/libui.pc
+    substituteInPlace $out/lib/pkgconfig/libui.pc \
       --subst-var-by out $out \
       --subst-var-by version "${version}"
   '';
   postInstall = lib.optionalString stdenv.isDarwin ''
-    install_name_tool -id $out/lib/${shortName}.A.dylib $out/lib/${shortName}.A.dylib
+    install_name_tool -id $out/lib/libui.A.dylib $out/lib/libui.A.dylib
   '';
 
   meta = with lib; {
diff --git a/pkgs/development/libraries/pdf2xml/default.nix b/pkgs/development/libraries/pdf2xml/default.nix
index 2dfd3546685..c45a8e03fd1 100644
--- a/pkgs/development/libraries/pdf2xml/default.nix
+++ b/pkgs/development/libraries/pdf2xml/default.nix
@@ -34,6 +34,7 @@ stdenv.mkDerivation {
 
   meta = with lib; {
     description = "PDF to XML converter";
+    homepage = "https://sourceforge.net/projects/pdf2xml/";
     platforms = platforms.unix;
     license = licenses.gpl2;
   };
diff --git a/pkgs/development/libraries/physics/geant4/datasets.nix b/pkgs/development/libraries/physics/geant4/datasets.nix
index e9b7f54e2a4..80de299793a 100644
--- a/pkgs/development/libraries/physics/geant4/datasets.nix
+++ b/pkgs/development/libraries/physics/geant4/datasets.nix
@@ -1,13 +1,13 @@
 { lib, stdenv, fetchurl, geant_version }:
 
 let
-  mkDataset = { name, version, sha256, envvar }:
+  mkDataset = { pname, version, sha256, envvar }:
     stdenv.mkDerivation {
-      inherit name version;
+      inherit pname version;
       inherit geant_version;
 
       src = fetchurl {
-        url = "https://cern.ch/geant4-data/datasets/${name}.${version}.tar.gz";
+        url = "https://cern.ch/geant4-data/datasets/${pname}.${version}.tar.gz";
         inherit sha256;
       };
 
@@ -15,7 +15,7 @@ let
       dontBuild = true;
       dontConfigure = true;
 
-      datadir = "${placeholder "out"}/share/Geant4-${geant_version}/data/${name}${version}";
+      datadir = "${placeholder "out"}/share/Geant4-${geant_version}/data/${pname}${version}";
       installPhase = ''
         mkdir -p $datadir
         mv ./* $datadir
@@ -32,86 +32,86 @@ let
       };
     };
 in
-  builtins.listToAttrs (map (a: { inherit (a) name; value = mkDataset a; }) [
+  builtins.listToAttrs (map (a: { inherit (a) pname; value = mkDataset a; }) [
     {
-      name = "G4NDL";
+      pname = "G4NDL";
       version = "4.6";
       sha256 = "sha256-nSh88q4PuIeirc6AHudPub4hsNFm2rSby+6UCKUUVAg=";
       envvar = "NEUTRONHP";
     }
 
     {
-      name = "G4EMLOW";
+      pname = "G4EMLOW";
       version = "8.0";
       sha256 = "sha256-2Rmo5YOGiCV7kkimE5EOsqdjMFngMMi1DAosKtn9Kzs=";
       envvar = "LE";
     }
 
     {
-      name = "G4PhotonEvaporation";
+      pname = "G4PhotonEvaporation";
       version = "5.7";
       sha256 = "sha256-dh5C5W/93j2YOfn52BAmB8a0wDKRUe5Rggb07p535+U=";
       envvar = "LEVELGAMMA";
     }
 
     {
-      name = "G4RadioactiveDecay";
+      pname = "G4RadioactiveDecay";
       version = "5.6";
       sha256 = "sha256-OIYHfJyOWph4PmcY4cMlZ4me6y27M+QC1Edrwv5PDfE=";
       envvar = "RADIOACTIVE";
     }
 
     {
-      name = "G4SAIDDATA";
+      pname = "G4SAIDDATA";
       version = "2.0";
       sha256 = "sha256-HSao55uqceRNV1m59Vpn6Lft4xdRMWqekDfYAJDHLpE=";
       envvar = "SAIDXS";
     }
 
     {
-      name = "G4PARTICLEXS";
+      pname = "G4PARTICLEXS";
       version = "4.0";
       sha256 = "sha256-k4EDlwPD8rD9NqtJmTYqLItP+QgMMi+QtOMZKBEzypU=";
       envvar = "PARTICLEXS";
     }
 
     {
-      name = "G4ABLA";
+      pname = "G4ABLA";
       version = "3.1";
       sha256 = "sha256-dpiwUrWL8bmIa+rNvWr2B63B4Jn8cwq2shz38JDAJ+0=";
       envvar = "ABLA";
     }
 
     {
-      name = "G4INCL";
+      pname = "G4INCL";
       version = "1.0";
       sha256 = "sha256-cWFhghrp89BWX788LPNPTgLj5RnrQZqCI27vIsLENn0=";
       envvar = "INCL";
     }
 
     {
-      name = "G4PII";
+      pname = "G4PII";
       version = "1.3";
       sha256 = "sha256-YiWtkCZ19DgcmMa6JfxaBs6HVJqpeWNNPQNJHWYW6SY=";
       envvar = "PII";
     }
 
     {
-      name = "G4ENSDFSTATE";
+      pname = "G4ENSDFSTATE";
       version = "2.3";
       sha256 = "sha256-lETF4IIHkavTzKrOEFsOR3kPrc4obhEUmDTnnEqOkgM=";
       envvar = "ENSDFSTATE";
     }
 
     {
-      name = "G4RealSurface";
+      pname = "G4RealSurface";
       version = "2.2";
       sha256 = "sha256-mVTe4AEvUzEmf3g2kOkS5y21v1Lqm6vs0S6iIoIXaCA=";
       envvar = "REALSURFACE";
     }
 
     {
-      name = "G4TENDL";
+      pname = "G4TENDL";
       version = "1.4";
       sha256 = "sha256-S3J0AgzItO1Wm4ku8YwuCI7c22tm850lWFzO4l2XIeA=";
       envvar = "PARTICLEHP";
diff --git a/pkgs/development/libraries/prison/default.nix b/pkgs/development/libraries/prison/default.nix
index 4275622c24f..71f8596c646 100644
--- a/pkgs/development/libraries/prison/default.nix
+++ b/pkgs/development/libraries/prison/default.nix
@@ -1,12 +1,11 @@
 { lib, stdenv, fetchurl, cmake, qrencode, qt4, libdmtx }:
 
-let v = "1.0"; in
-
 stdenv.mkDerivation rec {
-  name = "prison-${v}";
+  pname = "prison";
+  version = "1.0";
 
   src = fetchurl {
-    url = "mirror://kde/stable/prison/${v}/src/${name}.tar.gz";
+    url = "mirror://kde/stable/prison/${version}/src/prison-${version}.tar.gz";
     sha256 = "08hkzzda36jpdywjqlyzcvli7cx17h4l9yffzsdnhdd788n28krr";
   };
 
diff --git a/pkgs/development/libraries/proj-datumgrid/default.nix b/pkgs/development/libraries/proj-datumgrid/default.nix
index 93e415f6269..8251a17a83c 100644
--- a/pkgs/development/libraries/proj-datumgrid/default.nix
+++ b/pkgs/development/libraries/proj-datumgrid/default.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, fetchFromGitHub }:
 
 stdenv.mkDerivation rec {
-  name = "proj-datumgrid";
+  pname = "proj-datumgrid";
   version = "world-1.0";
 
   src = fetchFromGitHub {
diff --git a/pkgs/development/libraries/qimageblitz/default.nix b/pkgs/development/libraries/qimageblitz/default.nix
index 709a3fb1533..e838eb07201 100644
--- a/pkgs/development/libraries/qimageblitz/default.nix
+++ b/pkgs/development/libraries/qimageblitz/default.nix
@@ -1,15 +1,11 @@
 {lib, stdenv, fetchurl, cmake, qt4}:
 
-let
-  pn = "qimageblitz";
-  v = "0.0.4";
-in
-
-stdenv.mkDerivation {
-  name = "${pn}-${v}";
+stdenv.mkDerivation rec {
+  pname = "qimageblitz";
+  version = "0.0.4";
 
   src = fetchurl {
-    url = "mirror://sourceforge/${pn}/${pn}-${v}.tar.bz2";
+    url = "mirror://sourceforge/qimageblitz/qimageblitz-${version}.tar.bz2";
     sha256 = "0pnaf3qi7rgkxzs2mssmslb3f9ya4cyx09wzwlis3ppyvf72j0p9";
   };
 
@@ -21,7 +17,7 @@ stdenv.mkDerivation {
   meta = {
     description = "Graphical effect and filter library for KDE4";
     license = lib.licenses.bsd2;
-    homepage = "http://${pn}.sourceforge.net";
+    homepage = "http://qimageblitz.sourceforge.net";
     platforms = lib.platforms.linux;
   };
 }
diff --git a/pkgs/development/libraries/qt-4.x/4.8/default.nix b/pkgs/development/libraries/qt-4.x/4.8/default.nix
index 96d2abe5a6e..e81f3c186d6 100644
--- a/pkgs/development/libraries/qt-4.x/4.8/default.nix
+++ b/pkgs/development/libraries/qt-4.x/4.8/default.nix
@@ -15,22 +15,17 @@
 , libobjc, ApplicationServices, OpenGL, Cocoa, AGL, libcxx
 }:
 
-let
-  v_maj = "4.8";
-  v_min = "7";
-  vers = "${v_maj}.${v_min}";
-in
-
 # TODO:
 #  * move some plugins (e.g., SQL plugins) to dedicated derivations to avoid
 #    false build-time dependencies
 
 stdenv.mkDerivation rec {
-  name = "qt-${vers}";
+  pname = "qt";
+  version = "4.8.7";
 
   src = fetchurl {
     url = "http://download.qt-project.org/official_releases/qt/"
-      + "${v_maj}/${vers}/qt-everywhere-opensource-src-${vers}.tar.gz";
+      + "${lib.versions.majorMinor version}/${version}/qt-everywhere-opensource-src-${version}.tar.gz";
     sha256 = "183fca7n7439nlhxyg1z7aky0izgbyll3iwakw4gwivy16aj5272";
   };
 
@@ -40,8 +35,6 @@ stdenv.mkDerivation rec {
 
   setOutputFlags = false;
 
-  # The version property must be kept because it will be included into the QtSDK package name
-  version = vers;
 
   prePatch = ''
     substituteInPlace configure --replace /bin/pwd pwd
@@ -131,13 +124,13 @@ stdenv.mkDerivation rec {
   preConfigure = ''
     export LD_LIBRARY_PATH="`pwd`/lib''${LD_LIBRARY_PATH:+:}$LD_LIBRARY_PATH"
     configureFlags+="
-      -docdir $out/share/doc/${name}
+      -docdir $out/share/doc/qt-${version}
       -plugindir $out/lib/qt4/plugins
       -importdir $out/lib/qt4/imports
-      -examplesdir $TMPDIR/share/doc/${name}/examples
-      -demosdir $TMPDIR/share/doc/${name}/demos
-      -datadir $out/share/${name}
-      -translationdir $out/share/${name}/translations
+      -examplesdir $TMPDIR/share/doc/qt-${version}/examples
+      -demosdir $TMPDIR/share/doc/qt-${version}/demos
+      -datadir $out/share/qt-${version}
+      -translationdir $out/share/qt-${version}/translations
       --jobs=$NIX_BUILD_CORES
     "
     unset LD # Makefile uses gcc for linking; setting LD interferes
diff --git a/pkgs/development/libraries/science/math/clmagma/default.nix b/pkgs/development/libraries/science/math/clmagma/default.nix
index 3905e70d340..fe9fc540902 100644
--- a/pkgs/development/libraries/science/math/clmagma/default.nix
+++ b/pkgs/development/libraries/science/math/clmagma/default.nix
@@ -3,7 +3,6 @@
 with lib;
 
 let
-  version = "1.3.0";
   incfile = builtins.toFile "make.inc.custom" ''
     CC        = g++
     FORT      = gfortran
@@ -32,10 +31,11 @@ let
     INC       = -I$(clBLAS)/include
                #-I$(AMDAPP)/include
   '';
-in stdenv.mkDerivation {
-  name = "clmagma-${version}";
+in stdenv.mkDerivation rec {
+  pname = "clmagma";
+  version = "1.3.0";
   src = fetchurl {
-    url = "http://icl.cs.utk.edu/projectsfiles/magma/cl/clmagma-${version}.tar.gz";
+    url = "https://icl.cs.utk.edu/projectsfiles/magma/cl/clmagma-${version}.tar.gz";
     sha256 = "1n27ny0xhwirw2ydn46pfcwy53gzia9zbam4irx44fd4d7f9ydv7";
     name = "clmagma-${version}.tar.gz";
   };
@@ -68,7 +68,7 @@ in stdenv.mkDerivation {
   meta = with lib; {
     description = "Matrix Algebra on GPU and Multicore Architectures, OpenCL port";
     license = licenses.bsd3;
-    homepage = "http://icl.cs.utk.edu/magma/index.html";
+    homepage = "https://icl.cs.utk.edu/magma/index.html";
     platforms = platforms.linux;
     maintainers = with maintainers; [ volhovm ];
   };
diff --git a/pkgs/development/libraries/science/math/suitesparse/4.4.nix b/pkgs/development/libraries/science/math/suitesparse/4.4.nix
index 1ebac6ac445..e734ed8ff35 100644
--- a/pkgs/development/libraries/science/math/suitesparse/4.4.nix
+++ b/pkgs/development/libraries/science/math/suitesparse/4.4.nix
@@ -3,14 +3,12 @@
 }:
 
 let
-  version = "4.4.4";
-  name = "suitesparse-${version}";
-
   int_t = if blas.isILP64 then "int64_t" else "int32_t";
   SHLIB_EXT = stdenv.hostPlatform.extensions.sharedLibrary;
 in
-stdenv.mkDerivation {
-  inherit name;
+stdenv.mkDerivation rec {
+  version = "4.4.4";
+  pname = "suitesparse";
 
   src = fetchurl {
     url = "http://faculty.cse.tamu.edu/davis/SuiteSparse/SuiteSparse-${version}.tar.gz";
@@ -71,7 +69,7 @@ stdenv.mkDerivation {
     done
 
     # Install documentation
-    outdoc=$out/share/doc/${name}
+    outdoc=$out/share/doc/suitesparse-${version}
     mkdir -p $outdoc
     cp -r AMD/Doc $outdoc/amd
     cp -r BTF/Doc $outdoc/bft
diff --git a/pkgs/development/libraries/soil/default.nix b/pkgs/development/libraries/soil/default.nix
index dcec1c897b3..39a64c84ddc 100644
--- a/pkgs/development/libraries/soil/default.nix
+++ b/pkgs/development/libraries/soil/default.nix
@@ -6,7 +6,8 @@
 }:
 
 stdenv.mkDerivation {
-  name = "soil";
+  pname = "soil";
+  version = "unstable-2020-01-04";
 
   src = fetchzip {
     url = "https://web.archive.org/web/20200104042737id_/http://www.lonesock.net/files/soil.zip";
diff --git a/pkgs/development/libraries/speech-tools/default.nix b/pkgs/development/libraries/speech-tools/default.nix
index 8706b878922..c69345193c7 100644
--- a/pkgs/development/libraries/speech-tools/default.nix
+++ b/pkgs/development/libraries/speech-tools/default.nix
@@ -1,11 +1,11 @@
 { lib, stdenv, fetchurl, alsa-lib, ncurses }:
 
 stdenv.mkDerivation rec {
-  name = "speech_tools-${version}.0";
-  version = "2.5";
+  pname = "speech_tools";
+  version = "2.5.0";
 
   src = fetchurl {
-    url = "http://www.festvox.org/packed/festival/${version}/${name}-release.tar.gz";
+    url = "http://www.festvox.org/packed/festival/${lib.versions.majorMinor version}/speech_tools-${version}-release.tar.gz";
     sha256 = "1k2xh13miyv48gh06rgsq2vj25xwj7z6vwq9ilsn8i7ig3nrgzg4";
   };
 
diff --git a/pkgs/development/libraries/tclx/default.nix b/pkgs/development/libraries/tclx/default.nix
index a8cf2a44fab..3c814e17207 100644
--- a/pkgs/development/libraries/tclx/default.nix
+++ b/pkgs/development/libraries/tclx/default.nix
@@ -1,18 +1,19 @@
 { lib, fetchurl, tcl }:
 
 tcl.mkTclDerivation rec {
-  name = "tclx-${version}.${patch}";
-  version = "8.4";
-  patch = "1";
+  pname = "tclx";
+  version = "8.4.1";
 
   src = fetchurl {
-    url = "mirror://sourceforge/tclx/tclx${version}.${patch}.tar.bz2";
+    url = "mirror://sourceforge/tclx/tclx${version}.tar.bz2";
     sha256 = "1v2qwzzidz0is58fd1p7wfdbscxm3ip2wlbqkj5jdhf6drh1zd59";
   };
 
   # required in order for tclx to properly detect tclx.tcl at runtime
-  postInstall = ''
-    ln -s $prefix/lib/tclx${version} $prefix/lib/tclx${version}/tclx${version}
+  postInstall = let
+    majorMinorVersion = lib.versions.majorMinor version;
+  in ''
+    ln -s $prefix/lib/tclx${majorMinorVersion} $prefix/lib/tclx${majorMinorVersion}/tclx${majorMinorVersion}
   '';
 
   meta = {
diff --git a/pkgs/development/libraries/uri/default.nix b/pkgs/development/libraries/uri/default.nix
index 48a80aacdf5..980d073f128 100644
--- a/pkgs/development/libraries/uri/default.nix
+++ b/pkgs/development/libraries/uri/default.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, fetchFromGitHub, cmake, doxygen }:
 
 stdenv.mkDerivation rec {
-  name = "uri-${version}";
+  pname = "uri";
   version = "1.1.0";
 
   src = fetchFromGitHub {
diff --git a/pkgs/development/libraries/vte/2.90.nix b/pkgs/development/libraries/vte/2.90.nix
index 55ef86c88a0..dfb76069c3b 100644
--- a/pkgs/development/libraries/vte/2.90.nix
+++ b/pkgs/development/libraries/vte/2.90.nix
@@ -1,14 +1,11 @@
 { lib, stdenv, fetchurl, intltool, pkg-config, glib, gtk3, ncurses, gobject-introspection }:
 
 stdenv.mkDerivation rec {
-  versionMajor = "0.36";
-  versionMinor = "3";
-  moduleName   = "vte";
-
-  name = "${moduleName}-${versionMajor}.${versionMinor}";
+  pname = "vte";
+  version = "0.36.3";
 
   src = fetchurl {
-    url = "mirror://gnome/sources/${moduleName}/${versionMajor}/${name}.tar.xz";
+    url = "mirror://gnome/sources/vte/${lib.versions.majorMinor version}/vte-${version}.tar.xz";
     sha256 = "54e5b07be3c0f7b158302f54ee79d4de1cb002f4259b6642b79b1e0e314a959c";
   };