vscode-extensions: set pname (#354740)

  See the release notes of

  [v1.7.0](https://github.com/jtroo/kanata/releases/tag/v1.7.0)

  for more information.

- `vscode-utils.buildVscodeExtension` now requires pname as an argument

- the notmuch vim plugin now lives in a separate output of the `notmuch`

  package. Installing `notmuch` will not bring the notmuch vim package anymore,

  };

in

vscode-utils.buildVscodeExtension {

  inherit version vsix;

  name = "${pname}-${version}";

  inherit version vsix pname;

  src = "${vsix}/${pname}.zip";

  vscodeExtUniqueId = "${publisher}.${pname}";

  vscodeExtPublisher = publisher;

let

  buildVscodeExtension =

    a@{

      name,

      pname,

      src,

      # Same as "Unique Identifier" on the extension's web page.

      # For the moment, only serve as unique extension dir.

      ...

    }:

    stdenv.mkDerivation (

      (removeAttrs a [ "vscodeExtUniqueId" ])

      (removeAttrs a [

        "vscodeExtUniqueId"

        "pname"

      ])

      // {

        name = "vscode-extension-${name}";

        pname = "vscode-extension-${pname}";

        passthru = passthru // {

          inherit vscodeExtPublisher vscodeExtName vscodeExtUniqueId;

        "vsix"

      ])

      // {

        name = "${mktplcRef.publisher}-${mktplcRef.name}-${mktplcRef.version}";

        pname = "${mktplcRef.publisher}-${mktplcRef.name}";

        version = mktplcRef.version;

        src = if (vsix != null) then vsix else fetchVsixFromVscodeMarketplace mktplcRef;

        vscodeExtPublisher = mktplcRef.publisher;