NixOS · Nov 24, 2019 · Nov 24, 2019 · Nov 24, 2019 · Nov 24, 2019 · Nov 24, 2019
diff --git a/doc/using/configuration.xml b/doc/using/configuration.xml
@@ -141,11 +141,10 @@
      For a more useful example, try the following. This configuration only allows unfree packages named flash player and visual studio code:
 <programlisting>
 {
-  allowUnfreePredicate = (pkg: builtins.elem
-    (pkg.pname or (builtins.parseDrvName pkg.name).name) [
-      "flashplayer"
-      "vscode"
-    ]);
+  allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [
+    "flashplayer"
+    "vscode"
+  ];
 }
 </programlisting>
     </para>
@@ -217,7 +216,7 @@
      The following configuration example only allows insecure packages with very short names:
 <programlisting>
 {
-  allowInsecurePredicate = (pkg: (builtins.stringLength (builtins.parseDrvName pkg.name).name) &lt;= 5);
+  allowInsecurePredicate = pkg: builtins.stringLength (lib.getName pkg) &lt;= 5;
 }
 </programlisting>
     </para>

diff --git a/lib/default.nix b/lib/default.nix
@@ -84,7 +84,8 @@ let
       hasInfix hasPrefix hasSuffix stringToCharacters stringAsChars escape
       escapeShellArg escapeShellArgs replaceChars lowerChars
       upperChars toLower toUpper addContextFrom splitString
-      removePrefix removeSuffix versionOlder versionAtLeast getVersion
+      removePrefix removeSuffix versionOlder versionAtLeast
+      getName getVersion
       nameFromURL enableFeature enableFeatureAs withFeature
       withFeatureAs fixedWidthString fixedWidthNumber isStorePath
       toInt readPathsFromFile fileContents;

diff --git a/lib/strings.nix b/lib/strings.nix
@@ -472,6 +472,23 @@ rec {
   */
   versionAtLeast = v1: v2: !versionOlder v1 v2;
 
+  /* This function takes an argument that's either a derivation or a
+     derivation's "name" attribute and extracts the name part from that
+     argument.
+
+     Example:
+       getName "youtube-dl-2016.01.01"
+       => "youtube-dl"
+       getName pkgs.youtube-dl
+       => "youtube-dl"
+  */
+  getName = x:
+   let
+     parse = drv: (builtins.parseDrvName drv).name;
+   in if isString x
+      then parse x
+      else x.pname or (parse x.name);
+
   /* This function takes an argument that's either a derivation or a
      derivation's "name" attribute and extracts the version part from that
      argument.

diff --git a/maintainers/scripts/update.nix b/maintainers/scripts/update.nix
@@ -126,7 +126,7 @@ let
 
   packageData = package: {
     name = package.name;
-    pname = (builtins.parseDrvName package.name).name;
+    pname = lib.getName package;
     updateScript = map builtins.toString (pkgs.lib.toList package.updateScript);
   };
 

diff --git a/nixos/modules/services/databases/mysql.nix b/nixos/modules/services/databases/mysql.nix
@@ -8,15 +8,11 @@ let
 
   mysql = cfg.package;
 
-  isMariaDB =
-    let
-      pName = _p: (builtins.parseDrvName (_p.name)).name;
-    in pName mysql == pName pkgs.mariadb;
+  isMariaDB = lib.getName mysql == lib.getName pkgs.mariadb;
+
   isMysqlAtLeast57 =
-    let
-      pName = _p: (builtins.parseDrvName (_p.name)).name;
-    in (pName mysql == pName pkgs.mysql57)
-       && ((builtins.compareVersions mysql.version "5.7") >= 0);
+    (lib.getName mysql == lib.getName pkgs.mysql57)
+     && (builtins.compareVersions mysql.version "5.7" >= 0);
 
   mysqldOptions =
     "--user=${cfg.user} --datadir=${cfg.dataDir} --basedir=${mysql}";

diff --git a/nixos/modules/services/networking/znc/default.nix b/nixos/modules/services/networking/znc/default.nix
@@ -239,7 +239,7 @@ in
     services.znc = {
       configFile = mkDefault (pkgs.writeText "znc-generated.conf" semanticString);
       config = {
-        Version = (builtins.parseDrvName pkgs.znc.name).version;
+        Version = lib.getVersion pkgs.znc;
         Listener.l.Port = mkDefault 5000;
         Listener.l.SSL = mkDefault true;
       };

diff --git a/nixos/modules/system/boot/loader/grub/grub.nix b/nixos/modules/system/boot/loader/grub/grub.nix
@@ -47,8 +47,8 @@ let
       grub = f grub;
       grubTarget = f (grub.grubTarget or "");
       shell = "${pkgs.runtimeShell}";
-      fullName = (builtins.parseDrvName realGrub.name).name;
-      fullVersion = (builtins.parseDrvName realGrub.name).version;
+      fullName = lib.getName realGrub;
+      fullVersion = lib.getVersion realGrub;
       grubEfi = f grubEfi;
       grubTargetEfi = if cfg.efiSupport && (cfg.version == 2) then f (grubEfi.grubTarget or "") else "";
       bootPath = args.path;

diff --git a/pkgs/applications/editors/kdevelop5/kdevelop.nix b/pkgs/applications/editors/kdevelop5/kdevelop.nix
@@ -37,7 +37,7 @@ mkDerivation rec {
   # https://cgit.kde.org/kdevelop.git/commit/?id=716372ae2e8dff9c51e94d33443536786e4bd85b
   # required as nixos seems to be unable to find CLANG_BUILTIN_DIR
   cmakeFlags = [
-    "-DCLANG_BUILTIN_DIR=${llvmPackages.clang-unwrapped}/lib/clang/${(builtins.parseDrvName llvmPackages.clang.name).version}/include"
+    "-DCLANG_BUILTIN_DIR=${llvmPackages.clang-unwrapped}/lib/clang/${lib.getVersion llvmPackages.clang}/include"
   ];
 
   dontWrapQtApps = true;

diff --git a/pkgs/applications/misc/sweethome3d/default.nix b/pkgs/applications/misc/sweethome3d/default.nix
@@ -3,8 +3,6 @@
 
 let
 
-  getDesktopFileName = drvName: (builtins.parseDrvName drvName).name;
-
   # TODO: Should we move this to `lib`? Seems like its would be useful in many cases.
   extensionOf = filePath:
     lib.concatStringsSep "." (lib.tail (lib.splitString "." (builtins.baseNameOf filePath)));
@@ -15,15 +13,15 @@ let
   '') icons);
 
   mkSweetHome3D =
-  { name, module, version, src, license, description, desktopName, icons }:
+  { pname, module, version, src, license, description, desktopName, icons }:
 
   stdenv.mkDerivation rec {
-    inherit name version src description;
+    inherit pname version src description;
     exec = stdenv.lib.toLower module;
     sweethome3dItem = makeDesktopItem {
       inherit exec desktopName;
-      name = getDesktopFileName name;
-      icon = getDesktopFileName name;
+      name = pname;
+      icon = pname;
       comment =  description;
       genericName = "Computer Aided (Interior) Design";
       categories = "Application;Graphics;2DGraphics;3DGraphics;";
@@ -49,7 +47,7 @@ let
       mkdir -p $out/bin
       cp install/${module}-${version}.jar $out/share/java/.
 
-      ${installIcons (getDesktopFileName name) icons}
+      ${installIcons pname icons}
 
       cp "${sweethome3dItem}/share/applications/"* $out/share/applications
 
@@ -74,9 +72,9 @@ let
 in {
 
   application = mkSweetHome3D rec {
+    pname = stdenv.lib.toLower module + "-application";
     version = "6.2";
     module = "SweetHome3D";
-    name = stdenv.lib.toLower module + "-application-" + version;
     description = "Design and visualize your future home";
     license = stdenv.lib.licenses.gpl2Plus;
     src = fetchsvn {

diff --git a/pkgs/applications/misc/sweethome3d/editors.nix b/pkgs/applications/misc/sweethome3d/editors.nix
@@ -7,20 +7,17 @@ let
     m: "sweethome3d-"
     + removeSuffix "libraryeditor" (toLower m)
     + "-editor";
-  sweetName = m: v: sweetExec m + "-" + v;
-
-  getDesktopFileName = drvName: (builtins.parseDrvName drvName).name;
 
   mkEditorProject =
-  { name, module, version, src, license, description, desktopName }:
+  { pname, module, version, src, license, description, desktopName }:
 
   stdenv.mkDerivation rec {
     application = sweethome3dApp;
-    inherit name module version src description;
+    inherit pname module version src description;
     exec = sweetExec module;
     editorItem = makeDesktopItem {
       inherit exec desktopName;
-      name = getDesktopFileName name;
+      name = pname;
       comment =  description;
       genericName = "Computer Aided (Interior) Design";
       categories = "Application;Graphics;2DGraphics;3DGraphics;";
@@ -66,7 +63,7 @@ in {
   textures-editor = mkEditorProject rec {
     version = "1.5";
     module = "TexturesLibraryEditor";
-    name = sweetName module version;
+    pname = module;
     description = "Easily create SH3T files and edit the properties of the texture images it contain";
     license = stdenv.lib.licenses.gpl2Plus;
     src = fetchcvs {
@@ -81,7 +78,7 @@ in {
   furniture-editor = mkEditorProject rec {
     version = "1.19";
     module = "FurnitureLibraryEditor";
-    name = sweetName module version;
+    pname = module;
     description = "Quickly create SH3F files and edit the properties of the 3D models it contain";
     license = stdenv.lib.licenses.gpl2;
     src = fetchcvs {

diff --git a/pkgs/applications/networking/browsers/firefox/wrapper.nix b/pkgs/applications/networking/browsers/firefox/wrapper.nix
@@ -18,8 +18,9 @@ browser:
 
 let
   wrapper =
-    { browserName ? browser.browserName or (builtins.parseDrvName browser.name).name
-    , name ? (browserName + "-" + (builtins.parseDrvName browser.name).version)
+    { browserName ? browser.browserName or (lib.getName browser)
+    , pname ? browserName
+    , version ? lib.getVersion browser
     , desktopName ? # browserName with first letter capitalized
       (lib.toUpper (lib.substring 0 1 browserName) + lib.substring 1 (-1) browserName)
     , nameSuffix ? ""
@@ -83,7 +84,7 @@ let
       gtk_modules = [ libcanberra-gtk2 ];
 
     in stdenv.mkDerivation {
-      inherit name;
+      inherit pname version;
 
       desktopItem = makeDesktopItem {
         name = browserName;

diff --git a/pkgs/applications/networking/instant-messengers/slack/update.sh b/pkgs/applications/networking/instant-messengers/slack/update.sh
@@ -3,7 +3,7 @@
 
 set -eu -o pipefail
 
-oldVersion="$(nix-instantiate --eval -E "with import ./. {}; slack-theme-black.version or (builtins.parseDrvName slack-theme-black.name).version" | tr -d '"')"
+oldVersion="$(nix-instantiate --eval -E "with import ./. {}; lib.getVersion slack-theme-black" | tr -d '"')"
 latestSha="$(curl -L -s https://api.github.com/repos/laCour/slack-night-mode/commits\?sha\=master\&since\=${oldVersion} | jq -r '.[0].sha')"
 
 if [ ! "null" = "${latestSha}" ]; then

diff --git a/pkgs/applications/networking/instant-messengers/zoom-us/update.sh b/pkgs/applications/networking/instant-messengers/zoom-us/update.sh
@@ -3,7 +3,7 @@
 
 set -eu -o pipefail
 
-oldVersion=$(nix-instantiate --eval -E "with import ./. {}; zoom-us.version or (builtins.parseDrvName zoom-us.name).version" | tr -d '"')
+oldVersion=$(nix-instantiate --eval -E "with import ./. {}; lib.getVersion zoom-us" | tr -d '"')
 version="$(curl -sI https://zoom.us/client/latest/zoom_x86_64.tar.xz | grep -Fi 'Location:' | pcregrep -o1 '/(([0-9]\.?)+)/')"
 
 if [ ! "${oldVersion}" = "${version}" ]; then

diff --git a/pkgs/applications/version-management/git-and-tools/git/update.sh b/pkgs/applications/version-management/git-and-tools/git/update.sh
@@ -3,7 +3,7 @@
 
 set -eu -o pipefail
 
-oldVersion="$(nix-instantiate --eval -E "with import ./. {}; git.version or (builtins.parseDrvName git.name).version" | tr -d '"')"
+oldVersion="$(nix-instantiate --eval -E "with import ./. {}; lib.getVersion git" | tr -d '"')"
 latestTag="$(git ls-remote --tags --sort="v:refname" git://github.com/git/git.git | grep -v '\{\}' | grep -v '\-rc' | tail -1 | sed 's|^.*/v\(.*\)|\1|')"
 
 if [ ! "${oldVersion}" = "${latestTag}" ]; then

diff --git a/pkgs/applications/version-management/monotone/default.nix b/pkgs/applications/version-management/monotone/default.nix
@@ -5,7 +5,7 @@
 
 let
   version = "1.1";
-  perlVersion = (builtins.parseDrvName perl.name).version;
+  perlVersion = stdenv.lib.getVersion perl;
 in
 
 assert perlVersion != "";

diff --git a/pkgs/applications/video/vdr/wrapper.nix b/pkgs/applications/video/vdr/wrapper.nix
@@ -8,7 +8,7 @@
 
 in symlinkJoin {
 
-  name = "vdr-with-plugins-${(builtins.parseDrvName vdr.name).version}";
+  name = "vdr-with-plugins-${lib.getVersion vdr}";
 
   paths = [ vdr ] ++ plugins;
 

diff --git a/pkgs/applications/virtualization/OVMF/default.nix b/pkgs/applications/virtualization/OVMF/default.nix
@@ -16,7 +16,7 @@ let
   else
     throw "Unsupported architecture";
 
-  version = (builtins.parseDrvName edk2.name).version;
+  version = lib.getVersion edk2;
 in
 
 edk2.mkDerivation projectDscPath {

diff --git a/pkgs/build-support/bintools-wrapper/default.nix b/pkgs/build-support/bintools-wrapper/default.nix
@@ -34,8 +34,8 @@ let
   targetPrefix = stdenv.lib.optionalString (targetPlatform != hostPlatform)
                                         (targetPlatform.config + "-");
 
-  bintoolsVersion = (builtins.parseDrvName bintools.name).version;
-  bintoolsName = (builtins.parseDrvName bintools.name).name;
+  bintoolsVersion = stdenv.lib.getVersion bintools;
+  bintoolsName = stdenv.lib.removePrefix targetPrefix (stdenv.lib.getName bintools);
 
   libc_bin = if libc == null then null else getBin libc;
   libc_dev = if libc == null then null else getDev libc;
@@ -74,7 +74,7 @@ in
 
 stdenv.mkDerivation {
   name = targetPrefix
-    + (if name != "" then name else stdenv.lib.removePrefix targetPrefix "${bintoolsName}-wrapper")
+    + (if name != "" then name else "${bintoolsName}-wrapper")
     + (stdenv.lib.optionalString (bintools != null && bintoolsVersion != "") "-${bintoolsVersion}");
 
   preferLocalBuild = true;

diff --git a/pkgs/build-support/cc-wrapper/default.nix b/pkgs/build-support/cc-wrapper/default.nix
@@ -35,8 +35,8 @@ let
   targetPrefix = stdenv.lib.optionalString (targetPlatform != hostPlatform)
                                            (targetPlatform.config + "-");
 
-  ccVersion = (builtins.parseDrvName cc.name).version;
-  ccName = (builtins.parseDrvName cc.name).name;
+  ccVersion = stdenv.lib.getVersion cc;
+  ccName = stdenv.lib.removePrefix targetPrefix (stdenv.lib.getName cc);
 
   libc_bin = if libc == null then null else getBin libc;
   libc_dev = if libc == null then null else getDev libc;
@@ -94,7 +94,7 @@ assert nativePrefix == bintools.nativePrefix;
 
 stdenv.mkDerivation {
   name = targetPrefix
-    + (if name != "" then name else stdenv.lib.removePrefix targetPrefix "${ccName}-wrapper")
+    + (if name != "" then name else "${ccName}-wrapper")
     + (stdenv.lib.optionalString (cc != null && ccVersion != "") "-${ccVersion}");
 
   preferLocalBuild = true;

diff --git a/pkgs/common-updater/scripts/update-source-version b/pkgs/common-updater/scripts/update-source-version
@@ -92,8 +92,8 @@ if [ -z "$oldUrl" ]; then
     die "Couldn't evaluate source url from '$attr.src'!"
 fi
 
-drvName=$(nix-instantiate $systemArg --eval -E "with import ./. {}; (builtins.parseDrvName $attr.name).name" | tr -d '"')
-oldVersion=$(nix-instantiate $systemArg --eval -E "with import ./. {}; $attr.${versionKey} or (builtins.parseDrvName $attr.name).version" | tr -d '"')
+drvName=$(nix-instantiate $systemArg --eval -E "with import ./. {}; lib.getName $attr" | tr -d '"')
+oldVersion=$(nix-instantiate $systemArg --eval -E "with import ./. {}; $attr.${versionKey} or lib.getVersion $attr" | tr -d '"')
 
 if [ -z "$drvName" -o -z "$oldVersion" ]; then
     die "Couldn't evaluate name and version from '$attr.name'!"

diff --git a/pkgs/desktops/gnome-3/default.nix b/pkgs/desktops/gnome-3/default.nix
@@ -14,10 +14,9 @@ lib.makeScope pkgs.newScope (self: with self; {
   */
   removePackagesByName = packages: packagesToRemove:
     let
-      pkgName = drv: (builtins.parseDrvName drv.name).name;
-      namesToRemove = map pkgName packagesToRemove;
+      namesToRemove = map lib.getName packagesToRemove;
     in
-      lib.filter (x: !(builtins.elem (pkgName x) namesToRemove)) packages;
+      lib.filter (x: !(builtins.elem (lib.getName x) namesToRemove)) packages;
 
   maintainers = with pkgs.lib.maintainers; [ lethalman jtojnar hedning worldofpeace ];
 

diff --git a/pkgs/development/compilers/chicken/4/eggDerivation.nix b/pkgs/development/compilers/chicken/4/eggDerivation.nix
@@ -8,7 +8,7 @@
 let
   libPath = "${chicken}/var/lib/chicken/${toString chicken.binaryVersion}/";
   overrides = import ./overrides.nix;
-  baseName = (builtins.parseDrvName name).name;
+  baseName = lib.getName name;
   override = if builtins.hasAttr baseName overrides
    then
      builtins.getAttr baseName overrides

diff --git a/pkgs/development/em-modules/generic/default.nix b/pkgs/development/em-modules/generic/default.nix
@@ -10,8 +10,8 @@ pkgs.stdenv.mkDerivation (
   args //
   {
 
-  pname = "emscripten-${args.pname or (builtins.parseDrvName args.name).name}";
-  version = args.version or (builtins.parseDrvName args.name).version;
+  pname = "emscripten-${lib.getName args}";
+  version = lib.getVersion args;
   buildInputs = [ emscripten python ] ++ buildInputs;
   nativeBuildInputs = [ emscripten python ] ++ nativeBuildInputs;
 

diff --git a/pkgs/development/interpreters/lua-5/build-lua-package.nix b/pkgs/development/interpreters/lua-5/build-lua-package.nix
@@ -161,7 +161,7 @@ builtins.removeAttrs attrs ["disabled" "checkInputs" "externalDeps"] // {
 
   # enabled only for src.rock
   setSourceRoot= let
-    name_only=(builtins.parseDrvName name).name;
+    name_only= lib.getName name;
   in
     lib.optionalString (knownRockspec == null) ''
     # format is rockspec_basename/source_basename

diff --git a/pkgs/development/libraries/science/math/caffe2/default.nix b/pkgs/development/libraries/science/math/caffe2/default.nix
@@ -57,7 +57,7 @@ let
     dst = "pybind11";
   };
 
-  ccVersion = (builtins.parseDrvName stdenv.cc.name).version;
+  ccVersion = lib.getVersion stdenv.cc;
 in
 
 stdenv.mkDerivation rec {

diff --git a/pkgs/development/lisp-modules/openssl-lib-marked.nix b/pkgs/development/lisp-modules/openssl-lib-marked.nix
@@ -2,7 +2,7 @@ with import ../../../default.nix {};
 runCommand "openssl-lib-marked" {} ''
   mkdir -p "$out/lib"
   for lib in ssl crypto; do
-    version="${(builtins.parseDrvName openssl.name).version}"
+    version="${lib.getVersion openssl}"
     ln -s "${lib.getLib openssl}/lib/lib$lib.so" "$out/lib/lib$lib.so.$version"
     version="$(echo "$version" | sed -re 's/[a-z]+$//')"
     while test -n "$version"; do