x/build: "gomote ssh" to plan9-386 instance fails due to a "drawterm" loading error

[bcmills]

~/go-review/src$ go version
go version devel +9848e93cb7 Wed Oct 21 09:34:39 2020 +0000 linux/amd64

~/go-review/src$ go version -m $(which gomote)
/usr/local/google/home/bcmills/bin/gomote: devel +1f48afe8db Fri Oct 16 14:26:34 2020 -0400
        path    golang.org/x/build/cmd/gomote
        mod     golang.org/x/build      (devel)
        dep     cloud.google.com/go     v0.54.0 h1:3ithwDMr7/3vpAMXiH+ZQnYbuIsh+OPhUPMFC9enmn0=
        dep     github.com/aws/aws-sdk-go       v1.30.15        h1:Sd8QDVzzE8Sl+xNccmdj0HwMrFowv6uVUx9tGsCE1ZE=
        dep     github.com/golang/groupcache    v0.0.0-20200121045136-8c9f03a8e57e      h1:1r7pUrabqp18hOBcwBwiTsbnFeTZHV9eER/QT5JVZxY=
        dep     github.com/golang/protobuf      v1.3.4  h1:87PNWwrRvUSnqS4dlcBU/ftvOIBep4sYuBLlh6rX2wk=
        dep     github.com/googleapis/gax-go/v2 v2.0.5  h1:sjZBwGj9Jlw33ImPtvFviGYvseOtDM7hkSKB7+Tv3SM=
        dep     github.com/jmespath/go-jmespath v0.3.0  h1:OS12ieG61fsCg5+qLJ+SsW9NicxNkg3b25OyT2yCeUc=
        dep     go.opencensus.io        v0.22.3 h1:8sGtKOrtQqkN1bp2AtX+misvLIlOmsEsNd+9NIcPEm8=
        dep     golang.org/x/net        v0.0.0-20200301022130-244492dfa37a      h1:GuSPYbZzB5/dcLNCwLQLsg3obCJtX9IJhpXkvY7kzk0=
        dep     golang.org/x/oauth2     v0.0.0-20200107190931-bf48bf16ab8d      h1:TzXSXBo42m9gQenoE3b9BGiEpg5IG2JkU5FkPIawgtw=
        dep     golang.org/x/sync       v0.0.0-20190911185100-cd5d95a43a6e      h1:vcxGaoTs7kV8m5Np9uUNQin4BrLOthgV7252N8V+FwY=
        dep     golang.org/x/sys        v0.0.0-20200302150141-5c8b2ff67527      h1:uYVVQ9WP/Ds2ROhcaGPeIdVq0RIXVLwsHlnvJ+cT1So=
        dep     golang.org/x/text       v0.3.2  h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
        dep     google.golang.org/api   v0.20.0 h1:jz2KixHX7EcCPiQrySzPdnYT7DbINAypCqKZ1Z7GM40=
        dep     google.golang.org/genproto      v0.0.0-20200305110556-506484158171      h1:xes2Q2k+d/+YNXVw0FpZkIDJiaux4OVrRKXRAzH6A0U=
        dep     google.golang.org/grpc  v1.27.1 h1:zvIju4sqAGvwKspUQOhwnpcqSbzi7/H6QomNNjTL4sk=
        dep     gopkg.in/inf.v0 v0.9.1  h1:73M5CoZyi3ZLMOyDlQh031Cx6N9NDJ2Vvfl76EDAgDc=

~/go-review/src$ gomote ssh user-bcmills-plan9-386-0
$ ssh -p 2222 user-bcmills-plan9-386-0@farmer.golang.org # auth using https://github.com/bcmills.keys
Enter passphrase for key '/usr/local/google/home/bcmills/.ssh/id_rsa':
# Welcome to the gomote ssh proxy, bcmills.
# Connecting to/starting remote ssh...
#
# `gomote push` and the builders use:
# - workdir: /tmp/workdir
# - GOROOT: /tmp/workdir/go
# - GOPATH: /tmp/workdir/gopath
# - env: GO_BUILDER_NAME=plan9-386 GO_TEST_TIMEOUT_SCALE=3
# Happy debugging.
# Plan9 user/pass: …
/usr/local/bin/drawterm: error while loading shared libraries: libX11.so.6: cannot open shared object file: No such file or directory
Connection to farmer.golang.org closed.

CC @0intro @millerresearch @fhs @golang/release

[0intro]

I think you have to install the X11 library on the machine where drawterm is run.

[0intro]

conterm has a dependency on libX11.
If it's not possible to install libX11 on the ssh gateway, I could probably change conterm to remove dependency on libX11, but that would be a lot more work.

[0intro]

I've looked a the conterm code again, and the change was trivial.
I got rid of the libX11 dependency in conterm.
You can pull the latest changes and rebuild conterm.