matrix-commander: init at unstable-2021-04-18 (#119895)

* matrix-commander: init

* matrix-commander: cleanups & potential dep fixes

apply most SuperSandro2000's review comments;

used python3.withPackages -- this might be the correct
way to get runtime python dependencies to work even
when matrix-commander is a dependency of another packages
(as opposed to testing in nix-shell). I'm not sure though.

aiofiles seemed to be a missing runtime dependency when called
from another (nix-packaged, jvm-based) app -- there was an
import error without it.

cacerts might require explicit pinning, as described here:
https://gist.github.com/CMCDragonkai/1ae4f4b5edeb021ca7bb1d271caca999
(relevant snippet: wrapProgram $out/bin/program \
--set SSL_CERT_FILE "${cacert}/etc/ssl/certs/ca-bundle.crt"
)

* add runHook {pre,post}Install

(suggested by r-rmcgibbo)

* add link to github issue re gpl3{Only,Plus}

* Update pkgs/applications/networking/instant-messengers/matrix-commander/default.nix

Co-authored-by: Sandro <[e-mail]>

pkgs/applications/networking/instant-messengers/matrix-commander/default.nix

···
+{ stdenv, lib, fetchFromGitHub, cacert, python3 }:
+
+stdenv.mkDerivation {
+  pname = "matrix-commander";
+  version = "unstable-2021-04-18";
+
+  src = fetchFromGitHub {
+    owner = "8go";
+    repo = "matrix-commander";
+    rev = "3e89a5f4c98dd191880ae371cc63eb9282d7d91f";
+    sha256 = "08nwwszp1kv5b7bgf6mmfn42slxkyhy98x18xbn4pglc4bj32iql";
+  };
+
+  buildInputs = [
+    cacert
+    (python3.withPackages(ps: with ps; [
+      matrix-nio
+      magic
+      markdown
+      pillow
+      urllib3
+      aiofiles
+    ]))];
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/bin
+    cp $src/matrix-commander.py $out/bin/matrix-commander
+    chmod +x $out/bin/matrix-commander
+
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "Simple but convenient CLI-based Matrix client app for sending and receiving";
+    homepage = "https://github.com/8go/matrix-commander";
+    license = licenses.gpl3Only;
+    platforms = platforms.linux;
+    maintainers = [ maintainers.seb314 ];
+  };
+}

pkgs/top-level/all-packages.nix

···
       canonicaljson;
   };
 
+  matrix-commander = callPackage ../applications/networking/instant-messengers/matrix-commander { };
+
   matrix-dl = callPackage ../applications/networking/instant-messengers/matrix-dl { };
 
   matrix-recorder = callPackage ../applications/networking/instant-messengers/matrix-recorder {};