darwin: go: go get -v golang.org/x/net/html fails

[mstone]

Issue description

go get -v golang.org/x/net/html

fails due to an apparent inability to load appropriate TLS CA certificates from the system certificate store as indicated by the error message:

Fetching https://golang.org/x/net/html?go-get=1
https fetch failed: Get https://golang.org/x/net/html?go-get=1: x509: failed to load system roots and no roots provided
package golang.org/x/net/html: unrecognized import path "golang.org/x/net/html" (https fetch: Get https://golang.org/x/net/html?go-get=1: x509: failed to load system roots and no roots provided)

Steps to reproduce

go get -v golang.org/x/net/html 2>&1 | grep roots

Technical details

• System: OS X El Capitan (10.11.5)
• Nix version: 1.11.2
• Nixpkgs version: 16.09pre87131.292bfed

Notes

This error was probably found by TestSystemRoots() which is disabled on Darwin by a sed command at https://github.com/NixOS/nixpkgs/blob/master/pkgs/development/compilers/go/1.6.nix#L88.

[mstone]

https://github.com/mstone/nixpkgs/tree/darwin/workaround-buggy-go-fetchpemroots contains a workaround.

[mstone]

Probable duplicate of #10875 so closing now; we can always reopen if needed.