treewide: use ffmpeg_3 explicitly if not wanted otherwise

After making `ffmpeg` point to the latest `ffmpeg_4`, all packages that
used `ffmpeg` without requiring a specific version now use ffmpeg_3
explicitly so they shouldn't change.

pkgs/development/python-modules/ffmpeg-python/default.nix

@@ -2,7 +2,7 @@
 , buildPythonPackage
 , fetchFromGitHub
 , substituteAll
-, ffmpeg
+, ffmpeg_3
 , future
 , pytest
 , pytestrunner
@@ -24,7 +24,7 @@ buildPythonPackage rec {
     (
       substituteAll {
         src = ./ffmpeg-location.patch;
-        inherit ffmpeg;
+        ffmpeg = ffmpeg_3;
       }
     )
   ];

pkgs/development/python-modules/ha-ffmpeg/default.nix

@@ -1,5 +1,5 @@
 { stdenv, buildPythonPackage, fetchPypi, isPy3k
-, ffmpeg, async-timeout }:
+, ffmpeg_3, async-timeout }:
 
 buildPythonPackage rec {
   pname = "ha-ffmpeg";
@@ -12,7 +12,7 @@ buildPythonPackage rec {
     sha256 = "230f2fa990c9caaff1c67c2227b64756062248083849651a9bec7d599e519a42";
   };
 
-  buildInputs = [ ffmpeg ];
+  buildInputs = [ ffmpeg_3 ];
 
   propagatedBuildInputs = [ async-timeout ];
 

pkgs/development/python-modules/imageio/default.nix

@@ -8,7 +8,7 @@
 , pytest
 , numpy
 , isPy3k
-, ffmpeg
+, ffmpeg_3
 , futures
 , enum34
 }:
@@ -23,7 +23,7 @@ buildPythonPackage rec {
   };
 
   checkInputs = [ pytest psutil ] ++ stdenv.lib.optionals isPy3k [
-    imageio-ffmpeg ffmpeg
+    imageio-ffmpeg ffmpeg_3
     ];
   propagatedBuildInputs = [ numpy pillow ] ++ stdenv.lib.optionals (!isPy3k) [
     futures

pkgs/development/python-modules/infoqscraper/default.nix

@@ -21,7 +21,7 @@ buildPythonPackage rec {
   doCheck = false;
 
   buildInputs = [ html5lib ];
-  propagatedBuildInputs = [ six beautifulsoup4 pkgs.ffmpeg pkgs.swftools pkgs.rtmpdump ];
+  propagatedBuildInputs = [ six beautifulsoup4 pkgs.ffmpeg_3 pkgs.swftools pkgs.rtmpdump ];
 
   meta = with stdenv.lib; {
     description = "Discover presentations and/or create a movie consisting of slides and audio track from an infoq url";

pkgs/development/python-modules/sipsimple/default.nix

@@ -33,7 +33,7 @@ buildPythonPackage rec {
   '';
 
   nativeBuildInputs = [ pkgs.pkgconfig ];
-  buildInputs = with pkgs; [ alsaLib ffmpeg libv4l sqlite libvpx ];
+  buildInputs = with pkgs; [ alsaLib ffmpeg_3 libv4l sqlite libvpx ];
   propagatedBuildInputs = [ cython pkgs.openssl dnspython dateutil xcaplib msrplib lxml python-otr ];
 
   meta = with lib; {

pkgs/development/python-modules/stytra/default.nix

@@ -8,7 +8,7 @@
 , pandas
 , tables
 , git
-, ffmpeg
+, ffmpeg_3
 , scikitimage
 , matplotlib
 , qdarkstyle
@@ -55,7 +55,7 @@ buildPythonPackage rec {
     pandas
     tables
     git
-    ffmpeg
+    ffmpeg_3
     scikitimage
     matplotlib
     qdarkstyle

pkgs/development/python-modules/thumbor/default.nix

@@ -25,7 +25,7 @@ buildPythonPackage rec {
       gifsicle = "${pkgs.gifsicle}/bin/gifsicle";
       exiftool = "${pkgs.exiftool}/bin/exiftool";
       jpegtran = "${pkgs.libjpeg}/bin/jpegtran";
-      ffmpeg = "${pkgs.ffmpeg}/bin/ffmpeg";
+      ffmpeg = "${pkgs.ffmpeg_3}/bin/ffmpeg";
     })
   ];