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browserpass: Fix usage as Firefox plugin #79190

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@bkchr bkchr commented Feb 3, 2020

When the firefox-wrapper binds native plugins here:
https://github.com/NixOS/nixpkgs/blob/master/pkgs/applications/networking/browsers/firefox/wrapper.nix#L159
it uses lndir. The problem is that derivation internal symlinks are
relative. Thus, lndir will point to a file that is a relative link and
that will fail at runtime.

Motivation for this change

The firefox native plugin broke, because of: #74253

CC @andir as you have implemented the relative symlink pr.

Things done
  • Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)
  • Built on platform(s)
    • NixOS
    • macOS
    • other Linux distributions
  • Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
  • Tested compilation of all pkgs that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review wip"
  • Tested execution of all binary files (usually in ./result/bin/)
  • Determined the impact on package closure size (by running nix path-info -S before and after)
  • Ensured that relevant documentation is up to date
  • Fits CONTRIBUTING.md.
When the firefox-wrapper binds native plugins here:
https://github.com/NixOS/nixpkgs/blob/master/pkgs/applications/networking/browsers/firefox/wrapper.nix#L159
it uses lndir. The problem is that derivation internal symlinks are
relative. Thus, lndir will point to a file that is a relative link and
that will fail at runtime.
@Infinisil
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@Infinisil Infinisil commented Feb 4, 2020

Is this not fixable by changing the lndir command to first dereference symlink in https://github.com/NixOS/nixpkgs/blob/master/pkgs/applications/networking/browsers/firefox/wrapper.nix#L160 ? That seems like a more appropriate fix

@bkchr
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@bkchr bkchr commented Feb 4, 2020

Do you know how I can do this?

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@Infinisil Infinisil commented Feb 4, 2020

Not sure no, I thought of a readlink, but I guess it's on the wrong level or so. This is the first time I've seen lndir too.

@bkchr
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@bkchr bkchr commented Feb 4, 2020

Yeah, I checked yesterday the documentation and could not find any solution for it. (using lndir)

@arcnmx arcnmx mentioned this pull request Feb 5, 2020
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@bkchr bkchr commented Feb 5, 2020

Superseded by #79297

@bkchr bkchr closed this Feb 5, 2020
@bkchr bkchr deleted the bkchr:bkchr-fix-browserpass branch Feb 5, 2020
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