Failed install on macos 11.5

[sbonaime]

I have thi error when installing ffmpeg-concat

npm install --save ffmpeg-concat
npm WARN deprecated har-validator@5.1.5: this library is no longer supported
npm WARN deprecated left-pad@1.3.0: use String.prototype.padStart()
npm WARN deprecated uuid@3.4.0: Please upgrade  to version 7 or higher.  Older versions may use Math.random() in certain circumstances, which is known to be problematic.  See https://v8.dev/blog/math-random for details.
npm WARN deprecated request@2.88.2: request has been deprecated, see https://github.com/request/request/issues/3142
npm ERR! code 1
npm ERR! path /Users/bonaime/node_modules/ffmpeg-concat/node_modules/sharp
npm ERR! command failed
npm ERR! command sh -c (node install/libvips && node install/dll-copy && prebuild-install) || (node-gyp rebuild && node install/dll-copy)
npm ERR! TOUCH Release/obj.target/libvips-cpp.stamp
npm ERR!   CXX(target) Release/obj.target/sharp/src/common.o
npm ERR! info sharp Using cached /Users/bonaime/.npm/_libvips/libvips-8.9.0-darwin-x64.tar.gz
npm ERR! gyp info it worked if it ends with ok
npm ERR! gyp info using node-gyp@7.1.2
npm ERR! gyp info using node@16.5.0 | darwin | x64
npm ERR! gyp info find Python using Python version 3.9.6 found at "/usr/local/opt/python@3.9/bin/python3.9"
npm ERR! (node:9192) [DEP0150] DeprecationWarning: Setting process.config is deprecated. In the future the property will be read-only.
npm ERR! (Use `node --trace-deprecation ...` to show where the warning was created)
npm ERR! gyp info spawn /usr/local/opt/python@3.9/bin/python3.9
npm ERR! gyp info spawn args [
npm ERR! gyp info spawn args   '/Users/bonaime/node_modules/node-gyp/gyp/gyp_main.py',
npm ERR! gyp info spawn args   'binding.gyp',
npm ERR! gyp info spawn args   '-f',
npm ERR! gyp info spawn args   'make',
npm ERR! gyp info spawn args   '-I',
npm ERR! gyp info spawn args   '/Users/bonaime/node_modules/ffmpeg-concat/node_modules/sharp/build/config.gypi',
npm ERR! gyp info spawn args   '-I',
npm ERR! gyp info spawn args   '/Users/bonaime/node_modules/node-gyp/addon.gypi',
npm ERR! gyp info spawn args   '-I',
npm ERR! gyp info spawn args   '/Users/bonaime/Library/Caches/node-gyp/16.5.0/include/node/common.gypi',
npm ERR! gyp info spawn args   '-Dlibrary=shared_library',
npm ERR! gyp info spawn args   '-Dvisibility=default',
npm ERR! gyp info spawn args   '-Dnode_root_dir=/Users/bonaime/Library/Caches/node-gyp/16.5.0',
npm ERR! gyp info spawn args   '-Dnode_gyp_dir=/Users/bonaime/node_modules/node-gyp',
npm ERR! gyp info spawn args   '-Dnode_lib_file=/Users/bonaime/Library/Caches/node-gyp/16.5.0/<(target_arch)/node.lib',
npm ERR! gyp info spawn args   '-Dmodule_root_dir=/Users/bonaime/node_modules/ffmpeg-concat/node_modules/sharp',
npm ERR! gyp info spawn args   '-Dnode_engine=v8',
npm ERR! gyp info spawn args   '--depth=.',
npm ERR! gyp info spawn args   '--no-parallel',
npm ERR! gyp info spawn args   '--generator-output',
npm ERR! gyp info spawn args   'build',
npm ERR! gyp info spawn args   '-Goutput_dir=.'
npm ERR! gyp info spawn args ]
npm ERR! gyp info spawn make
npm ERR! gyp info spawn args [ 'BUILDTYPE=Release', '-C', 'build' ]
npm ERR! In file included from ../src/common.cc:22:
npm ERR! In file included from /Users/bonaime/Library/Caches/node-gyp/16.5.0/include/node/node.h:63:
npm ERR! In file included from /Users/bonaime/Library/Caches/node-gyp/16.5.0/include/node/v8.h:30:
npm ERR! /Users/bonaime/Library/Caches/node-gyp/16.5.0/include/node/v8-internal.h:454:38: error: no template named 'remove_cv_t' in namespace 'std'; did you mean 'remove_cv'?
npm ERR!             !std::is_same<Data, std::remove_cv_t<T>>::value>::Perform(data);
npm ERR!                                 ~~~~~^~~~~~~~~~~
npm ERR!                                      remove_cv
npm ERR! /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/type_traits:776:50: note: 'remove_cv' declared here
npm ERR! template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_cv
npm ERR!                                                  ^
npm ERR! 1 error generated.
npm ERR! make: *** [Release/obj.target/sharp/src/common.o] Error 1
npm ERR! gyp ERR! build error
npm ERR! gyp ERR! stack Error: `make` failed with exit code: 2
npm ERR! gyp ERR! stack     at ChildProcess.onExit (/Users/bonaime/node_modules/node-gyp/lib/build.js:194:23)
npm ERR! gyp ERR! stack     at ChildProcess.emit (node:events:394:28)
npm ERR! gyp ERR! stack     at Process.ChildProcess._handle.onexit (node:internal/child_process:290:12)
npm ERR! gyp ERR! System Darwin 20.6.0
npm ERR! gyp ERR! command "/usr/local/Cellar/node/16.5.0/bin/node" "/Users/bonaime/node_modules/.bin/node-gyp" "rebuild"
npm ERR! gyp ERR! cwd /Users/bonaime/node_modules/ffmpeg-concat/node_modules/sharp
npm ERR! gyp ERR! node -v v16.5.0
npm ERR! gyp ERR! node-gyp -v v7.1.2
npm ERR! gyp ERR! not ok

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/bonaime/.npm/_logs/2021-07-22T12_13_10_441Z-debug.log

It is maybe linked with a node-gyp install problem https://github.com/nodejs/node-gyp/issues/2460

[cclauss]

% brew list

1. Is brew on your machine?
2. Is ffmpegin the brew list?

If 1. is yes and 2. is no, then please brew install ffmpeg and try again.

[sbonaime]

1. no !
2. ffmpeg is in my brew list

   which ffmpeg
   /usr/local/bin/ffmpeg
   ll /usr/local/bin/ffmpeg
   lrwxr-xr-x  1 bonaime  admin    33B Jun 15 15:33 /usr/local/bin/ffmpeg -> ../Cellar/ffmpeg/4.4_2/bin/ffmpeg

[sbonaime]

https://github.com/nodejs/node-gyp/issues/2460#issuecomment-884906318

[sbonaime]

I went from node -v npm -v v16.5.0 7.20.0

to node -v npm -v v14.17.3 6.14.13

and ffmpeg-concat is now installed and working !

[cclauss]

123 was an attempt to demonstrate the problem but Travis CI is on (permanent?) vacation.