diff --git a/pkgs/applications/audio/cdparanoia/default.nix b/pkgs/applications/audio/cdparanoia/default.nix
index 96330d4e955719..c419d141d1baae 100644
--- a/pkgs/applications/audio/cdparanoia/default.nix
+++ b/pkgs/applications/audio/cdparanoia/default.nix
@@ -34,9 +34,10 @@ stdenv.mkDerivation rec {
     cp ${gnu-config}/config.guess configure.guess
   '';
 
-  meta = {
+  meta = with stdenv.lib; {
     homepage = https://xiph.org/paranoia;
     description = "A tool and library for reading digital audio from CDs";
-    platforms = stdenv.lib.platforms.unix;
+    license = with licenses; [ gpl2Plus lgpl21Plus ];
+    platforms = platforms.unix;
   };
 }
diff --git a/pkgs/applications/audio/flac/default.nix b/pkgs/applications/audio/flac/default.nix
index 99aedae19124bd..fb5390cb46effd 100644
--- a/pkgs/applications/audio/flac/default.nix
+++ b/pkgs/applications/audio/flac/default.nix
@@ -18,6 +18,6 @@ stdenv.mkDerivation rec {
     homepage = https://xiph.org/flac/;
     description = "Library and tools for encoding and decoding the FLAC lossless audio file format";
     platforms = platforms.all;
-    maintainers = [ ];
+    license = licenses.bsd3;
   };
 }
diff --git a/pkgs/applications/graphics/ImageMagick/7.0.nix b/pkgs/applications/graphics/ImageMagick/7.0.nix
index 86aafa9697df82..c4afd6b3bed3cf 100644
--- a/pkgs/applications/graphics/ImageMagick/7.0.nix
+++ b/pkgs/applications/graphics/ImageMagick/7.0.nix
@@ -84,6 +84,7 @@ stdenv.mkDerivation rec {
     homepage = http://www.imagemagick.org/;
     description = "A software suite to create, edit, compose, or convert bitmap images";
     platforms = platforms.linux ++ platforms.darwin;
+    license = licenses.asl20;
     maintainers = with maintainers; [ the-kenny wkennington ];
   };
 }
diff --git a/pkgs/applications/graphics/batik/default.nix b/pkgs/applications/graphics/batik/default.nix
index a27590ccd4da25..4032e2e3fee358 100644
--- a/pkgs/applications/graphics/batik/default.nix
+++ b/pkgs/applications/graphics/batik/default.nix
@@ -10,7 +10,10 @@ stdenv.mkDerivation {
 
   buildInputs = [unzip];
 
-  meta = {
-    platforms = stdenv.lib.platforms.unix;
+  meta = with stdenv.lib; {
+    description = "Java based toolkit for handling SVG";
+    homepage = https://xmlgraphics.apache.org/batik;
+    license = licenses.asl20;
+    platforms = platforms.unix;
   };
 }
diff --git a/pkgs/applications/graphics/dia/default.nix b/pkgs/applications/graphics/dia/default.nix
index 4780c823697a88..a1f26f7bc09f4c 100644
--- a/pkgs/applications/graphics/dia/default.nix
+++ b/pkgs/applications/graphics/dia/default.nix
@@ -28,10 +28,11 @@ stdenv.mkDerivation rec {
 
   hardeningDisable = [ "format" ];
 
-  meta = {
+  meta = with stdenv.lib; {
     description = "Gnome Diagram drawing software";
     homepage = http://live.gnome.org/Dia;
-    maintainers = with stdenv.lib.maintainers; [raskin];
-    platforms = stdenv.lib.platforms.unix;
+    maintainers = with maintainers; [ raskin ];
+    license = licenses.gpl2;
+    platforms = platforms.unix;
   };
 }
diff --git a/pkgs/applications/graphics/epeg/default.nix b/pkgs/applications/graphics/epeg/default.nix
index ef694dec6527fa..3645cc565728eb 100644
--- a/pkgs/applications/graphics/epeg/default.nix
+++ b/pkgs/applications/graphics/epeg/default.nix
@@ -26,6 +26,9 @@ stdenv.mkDerivation rec {
     homepage = https://github.com/mattes/epeg;
     description = "Insanely fast JPEG/ JPG thumbnail scaling";
     platforms = platforms.linux ++ platforms.darwin;
+    license = {
+      url = "https://github.com/mattes/epeg#license";
+    };
     maintainers = with maintainers; [ nh2 ];
   };
 }
diff --git a/pkgs/applications/graphics/gqview/default.nix b/pkgs/applications/graphics/gqview/default.nix
index a892f98ac4753e..75140bd005d56e 100644
--- a/pkgs/applications/graphics/gqview/default.nix
+++ b/pkgs/applications/graphics/gqview/default.nix
@@ -18,9 +18,10 @@ stdenv.mkDerivation {
 
   hardeningDisable = [ "format" ];
 
-  meta = {
+  meta = with stdenv.lib; {
     description = "A fast image viewer";
     homepage = http://gqview.sourceforge.net;
-    platforms = stdenv.lib.platforms.unix;
+    license = licenses.gpl2;
+    platforms = platforms.unix;
   };
 }
diff --git a/pkgs/applications/graphics/photivo/default.nix b/pkgs/applications/graphics/photivo/default.nix
index 73bbd5003bd883..4843898eb645a6 100644
--- a/pkgs/applications/graphics/photivo/default.nix
+++ b/pkgs/applications/graphics/photivo/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = with stdenv.lib; {
-      platforms = platforms.linux;
-      maintainers = [ ];
+    platforms = platforms.linux;
+    license = licenses.gpl3;
   };
 }
diff --git a/pkgs/applications/graphics/qiv/default.nix b/pkgs/applications/graphics/qiv/default.nix
index 02f5f33f6e6b6d..8e6058d699803a 100644
--- a/pkgs/applications/graphics/qiv/default.nix
+++ b/pkgs/applications/graphics/qiv/default.nix
@@ -17,10 +17,11 @@ stdenv.mkDerivation (rec {
     substituteInPlace Makefile --replace /man/ /share/man/
   '';
 
-  meta = {
+  meta = with stdenv.lib; {
     description = "Quick image viewer";
     homepage = http://spiegl.de/qiv/;
     inherit version;
-    platforms = stdenv.lib.platforms.linux;
+    license = licenses.gpl2;
+    platforms = platforms.linux;
   };
 })