[Dunfell][meta-oe][PATCH] Revert "mpv: fetch waf in do_fetch"

["akuster" <akuster808@gmail.com>]

This reverts commit 8ce691e47f5b3f795821a439536f4b54b24f887f.

The above commit introduced an issue now being seen on Ubuntu 20.

ERROR: mpv-0.32.0-r0 do_configure: Error executing a python function in exec_python_func() autogenerated:

The stack trace of python calls that resulted in this exception/failure was:
File: 'exec_python_func() autogenerated', lineno: 2, function: <module>
     0001:
      *** 0002:waf_preconfigure(d)

[Gitlab issue #304 ]
error log: https://errors.yoctoproject.org/Errors/Details/539929/

Signed-off-by: Armin Kuster <akuster808@gmail.com>
---
 meta-oe/recipes-multimedia/mplayer/mpv_0.32.0.bb | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/meta-oe/recipes-multimedia/mplayer/mpv_0.32.0.bb b/meta-oe/recipes-multimedia/mplayer/mpv_0.32.0.bb
index 70a39c7b60b..f7b0f30fb9d 100644
--- a/meta-oe/recipes-multimedia/mplayer/mpv_0.32.0.bb
+++ b/meta-oe/recipes-multimedia/mplayer/mpv_0.32.0.bb
@@ -18,9 +18,7 @@ LICENSE_FLAGS = "commercial"
 SRCREV_mpv = "70b991749df389bcc0a4e145b5687233a03b4ed7"
 SRC_URI = " \
     git://github.com/mpv-player/mpv;name=mpv \
-    https://waf.io/waf-2.0.20;name=waf;subdir=git \
 "
-SRC_URI[waf.sha256sum] = "bf971e98edc2414968a262c6aa6b88541a26c3cd248689c89f4c57370955ee7f"
 
 S = "${WORKDIR}/git"
 
@@ -103,10 +101,14 @@ EXTRA_OECONF = " \
     ${PACKAGECONFIG_CONFARGS} \
 "
 
-link_waf() {
-    ln -s waf-2.0.20 ${S}/waf
+do_patch[postfuncs] += "get_waf"
+
+get_waf() {
+    cd ${S}
+    ./bootstrap.py
+    sed -i -e 's|/usr/bin/env python|/usr/bin/env python3|g' ${S}/waf
+    cd -
 }
-do_unpack[postfuncs] += "link_waf"
 
 FILES_${PN} += " \
     ${datadir}/icons \
-- 
2.17.1