fix build

6 files changed, 7 insertions, 548 deletions

diff --git a/Dockerfile b/Dockerfile
index dd0e297..3002350 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM xena/go:1.11.2 AS build
+FROM xena/go:1.11.4 AS build
 WORKDIR /x
 COPY . .
 ENV GOPROXY=https://cache.greedo.xeserv.us
diff --git a/go.mod b/go.mod
index 85d8840..0d3f961 100644
--- a/go.mod
+++ b/go.mod
@@ -48,6 +48,7 @@ require (
 	github.com/kohkimakimoto/gluatemplate v0.0.0-20160815033744-d9e2c9d6b00f
 	github.com/kohkimakimoto/gluayaml v0.0.0-20160815032708-6fe413d49d73
 	github.com/kr/pretty v0.1.0
+	github.com/kr/pty v1.1.2 // indirect
 	github.com/layeh/gopher-luar v1.0.4
 	github.com/mndrix/golog v0.0.0-20170330170653-a28e2a269775
 	github.com/mndrix/ps v0.0.0-20170330174427-18e65badd6ab // indirect
@@ -58,6 +59,7 @@ require (
 	github.com/peterh/liner v1.1.0
 	github.com/pkg/errors v0.8.1
 	github.com/robertkrimen/godocdown v0.0.0-20130622164427-0bfa04905481
+	github.com/russross/blackfriday v1.5.1 // indirect
 	github.com/ssor/bom v0.0.0-20170718123548-6386211fdfcf // indirect
 	github.com/streamrail/concurrent-map v0.0.0-20160823150647-8bf1e9bacbf6
 	github.com/tmc/scp v0.0.0-20170824174625-f7b48647feef
@@ -67,7 +69,6 @@ require (
 	github.com/yuin/gluare v0.0.0-20170607022532-d7c94f1a80ed
 	github.com/yuin/gopher-lua v0.0.0-20181109042959-a0dfe84f6227
 	go4.org v0.0.0-20180809161055-417644f6feb5
-	golang.org/x/build v0.0.0-20181004175654-90ec83e7f349
 	golang.org/x/crypto v0.0.0-20181001203147-e3636079e1a4
 	golang.org/x/image v0.0.0-20180926015637-991ec62608f3 // indirect
 	golang.org/x/oauth2 v0.0.0-20181003184128-c57b0facaced
diff --git a/go.sum b/go.sum
index 6f4c44a..2f791ad 100644
--- a/go.sum
+++ b/go.sum
@@ -1,7 +1,3 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-contrib.go.opencensus.io/exporter/stackdriver v0.5.0/go.mod h1:QeFzMJDAw8TXt5+aRaSuE8l5BwaMIOIlaVkBOPRuMuw=
-dmitri.shuralyov.com/html/belt v0.0.0-20180602232347-f7d459c86be0/go.mod h1:JLBrvjyP0v+ecvNYvCpyZgu5/xkfAUhi6wJj28eUfSU=
-dmitri.shuralyov.com/state v0.0.0-20180228185332-28bcc343414c/go.mod h1:0PRwlb0D6DFvNNtx+9ybjezNCa8XF0xaYcETyp6rHWU=
 github.com/Greyh4t/gluassh v0.0.0-20180109082511-239b4f6310f4 h1:f6TV2YjK++45AAjV35fvimbImX5MVaOiV2/3DhbNpgg=
 github.com/Greyh4t/gluassh v0.0.0-20180109082511-239b4f6310f4/go.mod h1:e2V5IvwVow5cEY2rUG+D5lNAkusxAZbs7MWLJNPKQIw=
 github.com/McKael/madon v2.3.0+incompatible h1:xMUA+Fy4saDV+8tN3MMnwJUoYWC//5Fy8LeOqJsRNIM=
@@ -18,8 +14,6 @@ github.com/aclements/go-moremath v0.0.0-20180329182055-b1aff36309c7 h1:/NWziSfuX
 github.com/aclements/go-moremath v0.0.0-20180329182055-b1aff36309c7/go.mod h1:idZL3yvz4kzx1dsBOAC+oYv6L92P1oFEhUXUB1A/lwQ=
 github.com/ailncode/gluaxmlpath v0.0.0-20161126153117-6ce478ecb4a6 h1:FM0WudTZ+xeiXPJcs+X1Zg8JXe4vlb9P2GZYqCYjZkk=
 github.com/ailncode/gluaxmlpath v0.0.0-20161126153117-6ce478ecb4a6/go.mod h1:Ti1AvV2KUYtHEBX7eYbdAGEfFyKz9+lHrJPcr79Vkng=
-github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c=
-github.com/bradfitz/go-smtpd v0.0.0-20170404230938-deb6d6237625/go.mod h1:HYsPBTaaSFSlLx/70C2HPIMNZpVV8+vt/A+FMnYP11g=
 github.com/brandur/simplebox v0.0.0-20150921201729-84e9865bb03a h1:EMG9wk3iGM7WBAohiKenvpfyh1L5jv3snIMj3ffAMY8=
 github.com/brandur/simplebox v0.0.0-20150921201729-84e9865bb03a/go.mod h1:8hDWkKEpFQwZcugC69PxsoNQMh+0/A3FzLCppp/yJZM=
 github.com/bwmarrin/discordgo v0.18.0 h1:XopVQXCIFy7Cr2eT7NcYcm4k0l2PYX+AP5RUbIWX2/8=
@@ -33,8 +27,6 @@ github.com/cjoudrey/gluaurl v0.0.0-20161028222611-31cbb9bef199 h1:cJ1E8ZwZLfercT
 github.com/cjoudrey/gluaurl v0.0.0-20161028222611-31cbb9bef199/go.mod h1:jC+zrjHA5CaxJzn+tojIoIOzSp/6BlkRWXnMlxNkB+g=
 github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd h1:qMd81Ts1T2OTKmB4acZcyKaMtRnY5Y44NuXGX2GFJ1w=
 github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd/go.mod h1:sE/e/2PUdi/liOCUjSTXgM1o87ZssimdTWN964YiIeI=
-github.com/coreos/go-systemd v0.0.0-20180705093442-88bfeed483d3/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dgryski/go-failure v0.0.0-20151001134759-4963dbd58fd0 h1:SJzP6kZNFsdxFN4fRtVXu2yrf8QrKnofjQouzaCn36w=
@@ -43,7 +35,6 @@ github.com/dgryski/go-onlinestats v0.0.0-20170612111826-1c7d19468768 h1:Xzl7CSuS
 github.com/dgryski/go-onlinestats v0.0.0-20170612111826-1c7d19468768/go.mod h1:alfmlCqcg4uw9jaoIU1nOp9RFdJLMuu8P07BCEgpgoo=
 github.com/disintegration/imaging v1.5.0 h1:uYqUhwNmLU4K1FN44vhqS4TZJRAA4RhBINgbQlKyGi0=
 github.com/disintegration/imaging v1.5.0/go.mod h1:9B/deIUIrliYkyMTuXJd6OUFLcrZ2tf+3Qlwnaf/CjU=
-github.com/dustin/go-humanize v0.0.0-20180713052910-9f541cc9db5d/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
 github.com/eaburns/johaus v0.0.0-20180211190535-0482c3c1f4ff/go.mod h1:haq7Ati+IITjB94ZcX9Pur49JW6bQRs/yTcYaqDPxsc=
 github.com/eaburns/peggy v0.0.0-20180405011029-d685ddd3cbcb h1:VNtdhXiCNFtQkeRwcS8XW2+gyxollG4Kc4wnHbzGpP8=
 github.com/eaburns/peggy v0.0.0-20180405011029-d685ddd3cbcb/go.mod h1:5tfPwI6ukiK3W5vJzkj5MBQKHHY9Gcy2y6k1FC/23Xk=
@@ -57,44 +48,32 @@ github.com/facebookgo/stack v0.0.0-20160209184415-751773369052 h1:JWuenKqqX8nojt
 github.com/facebookgo/stack v0.0.0-20160209184415-751773369052/go.mod h1:UbMTZqLaRiH3MsBH8va0n7s1pQYcu3uTb8G4tygF4Zg=
 github.com/facebookgo/subset v0.0.0-20150612182917-8dac2c3c4870 h1:E2s37DuLxFhQDg5gKsWoLBOB0n+ZW8s599zru8FJ2/Y=
 github.com/facebookgo/subset v0.0.0-20150612182917-8dac2c3c4870/go.mod h1:5tD+neXqOorC30/tWg0LCSkrqj/AR6gu8yY8/fpw1q0=
-github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568/go.mod h1:xEzjJPgXI435gkrCt3MPfRiAkVrwSbHsst4LCFVfpJc=
 github.com/fogleman/gg v1.1.0 h1:wVTfU9tB/LDr2eI5HILatkzBQLD3yl0KtPFt8KlcSIY=
 github.com/fogleman/gg v1.1.0/go.mod h1:R/bRT+9gY/C5z7JzPU0zXsXHKM4/ayA+zqcVNZzPa1k=
 github.com/fogleman/primitive v0.0.0-20170926175833-69506c928bef h1:b2hzCO7V6vnDYAvucXo5smx9wut3A3Huw4VRNg1SMK8=
 github.com/fogleman/primitive v0.0.0-20170926175833-69506c928bef/go.mod h1:Tm6t8LbdhSCXNfpjTwoL1mdjCnyKHkMyf6PqQXo7Or8=
-github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/garyburd/redigo v1.6.0 h1:0VruCpn7yAIIu7pWVClQC8wxCJEcG3nyzpMSHKi1PQc=
 github.com/garyburd/redigo v1.6.0/go.mod h1:NR3MbYisc3/PwhQ00EMzDiPmrwpPxAn5GI05/YaO1SY=
-github.com/gliderlabs/ssh v0.1.1/go.mod h1:U7qILu1NlMHj9FlMhZLlkCdDnU1DBEAqr0aevW3Awn0=
 github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 h1:DACJavvAHhabrF08vX0COfcOBJRhZ8lUbR+ZWIs0Y5g=
 github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0/go.mod h1:E/TSTwGwJL78qG/PmXZO1EjYhfJinVAhrmmHX6Z8B9k=
-github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
-github.com/golang/protobuf v1.1.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
 github.com/google/go-github v17.0.0+incompatible h1:N0LgJ1j65A7kfXrZnUDaYCs/Sf4rEjNlfyDHW9dolSY=
 github.com/google/go-github v17.0.0+incompatible/go.mod h1:zLgOLi98H3fifZn+44m+umXrS52loVEgC2AApnigrVQ=
-github.com/google/go-querystring v0.0.0-20170111101155-53e6ce116135/go.mod h1:odCYkC5MyYFN7vkCjXpyrEuKhc/BUO6wN/zVPAxq5ck=
 github.com/google/go-querystring v1.0.0 h1:Xkwi/a1rcvNg1PPYe5vI8GbeBY/jrVuDX5ASuANWTrk=
 github.com/google/go-querystring v1.0.0/go.mod h1:odCYkC5MyYFN7vkCjXpyrEuKhc/BUO6wN/zVPAxq5ck=
 github.com/google/gops v0.3.5 h1:SIWvPLiYvy5vMwjxB3rVFTE4QBhUFj2KKWr3Xm7CKhw=
 github.com/google/gops v0.3.5/go.mod h1:pMQgrscwEK/aUSW1IFSaBPbJX82FPHWaSoJw1axQfD0=
-github.com/google/martian v2.0.0-beta.2.0.20180813215018-c223d6f7955e+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs=
 github.com/google/uuid v1.0.0 h1:b4Gk+7WdP/d3HZH8EJsZpvV7EtDOgaZLtnaNGIu1adA=
 github.com/google/uuid v1.0.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
-github.com/googleapis/gax-go v2.0.0+incompatible/go.mod h1:SFVmujtThgffbyetf+mdk2eWhX2bMyUtNHzFKcPA9HY=
-github.com/gopherjs/gopherjs v0.0.0-20180628210949-0892b62f0d9f/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
 github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH/Q=
 github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
-github.com/gregjones/httpcache v0.0.0-20180305231024-9cad4c3443a7/go.mod h1:FecbI9+v66THATjSRHfNgh1IVFe/9kFxbXtjV0ctIMA=
 github.com/howeyc/gopass v0.0.0-20170109162249-bf9dde6d0d2c h1:kQWxfPIHVLbgLzphqk3QUflDy9QdksZR4ygR807bpy0=
 github.com/howeyc/gopass v0.0.0-20170109162249-bf9dde6d0d2c/go.mod h1:lADxMC39cJJqL93Duh1xhAs4I2Zs8mKS89XWXFGp9cs=
 github.com/hullerob/go.farbfeld v0.0.0-20160317142651-b572f0728b69 h1:oVHYt/ne+aIKsvK4QhnDeCNz9PNn1FbXLtdsX8qZG34=
 github.com/hullerob/go.farbfeld v0.0.0-20160317142651-b572f0728b69/go.mod h1:mQEoc766DxPTAwQ54neWTK/lFqIeSO7OU6bqZsceglw=
 github.com/jaytaylor/html2text v0.0.0-20180606194806-57d518f124b0 h1:xqgexXAGQgY3HAjNPSaCqn5Aahbo5TKsmhp8VRfr1iQ=
 github.com/jaytaylor/html2text v0.0.0-20180606194806-57d518f124b0/go.mod h1:CVKlgaMiht+LXvHG173ujK6JUhZXKb2u/BQtjPDIvyk=
-github.com/jellevandenhooff/dkim v0.0.0-20150330215556-f50fe3d243e1/go.mod h1:E0B/fFc00Y+Rasa88328GlI/XbtyysCtTHZS8h7IrBU=
 github.com/joeshaw/envdecode v0.0.0-20180312135643-c9e015854467 h1:REcMVvHDwEBFDEUrphtsx+/LqVKkKfcWxnAuVKFzSWk=
 github.com/joeshaw/envdecode v0.0.0-20180312135643-c9e015854467/go.mod h1:Q+alOFAXgW5SrcfMPt/G4B2oN+qEcQRJjkn/f4mKL04=
 github.com/joho/godotenv v1.3.0 h1:Zjp+RcGpHhGlrMbJzXTrZZPrWj+1vfm90La1wgB6Bhc=
@@ -103,7 +82,6 @@ github.com/kardianos/osext v0.0.0-20170510131534-ae77be60afb1 h1:PJPDf8OUfOK1bb/
 github.com/kardianos/osext v0.0.0-20170510131534-ae77be60afb1/go.mod h1:1NbS8ALrpOvjt0rHPNLyCIeMtbizbir8U//inJ+zuB8=
 github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 h1:Z9n2FFNUXsshfwJMBgNA0RU6/i7WVaAegv3PtuIHPMs=
 github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51/go.mod h1:CzGEWj7cYgsdH8dAjBGEr58BoE7ScuLd+fwFZ44+/x8=
-github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/klauspost/cpuid v0.0.0-20180405133222-e7e905edc00e h1:+lIPJOWl+jSiJOc70QXJ07+2eg2Jy2EC7Mi11BWujeM=
 github.com/klauspost/cpuid v0.0.0-20180405133222-e7e905edc00e/go.mod h1:Pj4uuM528wm8OyEC2QMXAi2YiTZ96dNQPGgoMS4s3ek=
 github.com/klauspost/crc32 v0.0.0-20170628072449-bab58d77464a h1:NLr4Iy1X81t+cfi3RXELAOZhlkduugBKsO2RwWHRm8M=
@@ -122,22 +100,21 @@ github.com/kohkimakimoto/gluatemplate v0.0.0-20160815033744-d9e2c9d6b00f h1:CXJz
 github.com/kohkimakimoto/gluatemplate v0.0.0-20160815033744-d9e2c9d6b00f/go.mod h1:mepZlGlueX0FYzgC3KQMEuBBQuaAvdp8RUY+ZEe2fbI=
 github.com/kohkimakimoto/gluayaml v0.0.0-20160815032708-6fe413d49d73 h1:e2UU76WBjv6W0QUuPHe2QfSAXLR1kouek1fcSUtnSrk=
 github.com/kohkimakimoto/gluayaml v0.0.0-20160815032708-6fe413d49d73/go.mod h1:I+YgUp/uc0hF+H4RuQjR+uzDJNjUz7Sm21e63UCLWWQ=
+github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/pty v1.1.2 h1:Q7kfkJVHag8Gix8Z5+eTo09NFHV8MXL9K66sv9qDaVI=
 github.com/kr/pty v1.1.2/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/layeh/gopher-luar v1.0.4 h1:Vq9z0s+2zldfnhZ8gMAEveURmDe19nlLsn/zIxKbIxQ=
 github.com/layeh/gopher-luar v1.0.4/go.mod h1:MQNGlVP6GjSjpz9zLif7SbgOTGh6QRR+6ubmcNlW4Ug=
 github.com/mattn/go-runewidth v0.0.3 h1:a+kO+98RDGEfo6asOGMmpodZq4FNtnGP54yps8BzLR4=
 github.com/mattn/go-runewidth v0.0.3/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzpuz5H//U1FU=
-github.com/microcosm-cc/bluemonday v1.0.0/go.mod h1:hsXNsILzKxV+sX77C5b8FSuKF00vh2OMYv+xgHpAMF4=
 github.com/mndrix/golog v0.0.0-20170330170653-a28e2a269775 h1:KPqf9x/eMg3ZnHATLXcM1OgQMNVkPUv1QcGv6zTRMRg=
 github.com/mndrix/golog v0.0.0-20170330170653-a28e2a269775/go.mod h1:Q4YHYl483MNk6wwg3g8YsINpKe5S2UzUJCRSRlFaSU0=
 github.com/mndrix/ps v0.0.0-20170330174427-18e65badd6ab h1:fPrYMvMnWuED0MLhLyrny1fLaHhtiXK30pNyBGrk9Gs=
 github.com/mndrix/ps v0.0.0-20170330174427-18e65badd6ab/go.mod h1:dHgTaDInzkAqJv67VaX1IkK449M2UoBY68CZeI/bNCU=
-github.com/neelance/astrewrite v0.0.0-20160511093645-99348263ae86/go.mod h1:kHJEU3ofeGjhHklVoIGuVj85JJwZ6kWPaJwCIxgnFmo=
-github.com/neelance/sourcemap v0.0.0-20151028013722-8c68805598ab/go.mod h1:Qr6/a/Q4r9LP1IltGz7tA7iOK1WonHEYhu1HRBA7ZiM=
 github.com/olekukonko/tablewriter v0.0.0-20180912035003-be2c049b30cc h1:rQ1O4ZLYR2xXHXgBCCfIIGnuZ0lidMQw2S5n1oOv+Wg=
 github.com/olekukonko/tablewriter v0.0.0-20180912035003-be2c049b30cc/go.mod h1:vsDQFd/mU46D+Z4whnwzcISnGGzXWMclvtLoiIKAKIo=
 github.com/otm/gluaflag v0.0.0-20160113203828-078088de6891 h1:ADqWBpIYjPWtGIQJNKQQj5HMDECvb9Y2kzYTOhfzEzI=
@@ -153,43 +130,18 @@ github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/robertkrimen/godocdown v0.0.0-20130622164427-0bfa04905481 h1:jMxcLa+VjJKhpCwbLUXAD15wJ+hhvXMLujCl3MkXpfM=
+github.com/robertkrimen/godocdown v0.0.0-20130622164427-0bfa04905481 h1:hIqz4wmkOdw3S5lg8DrW0PaRx5VIaPGmCiFymE6KsIU=
 github.com/robertkrimen/godocdown v0.0.0-20130622164427-0bfa04905481/go.mod h1:C9WhFzY47SzYBIvzFqSvHIR6ROgDo4TtdTuRaOMjF/s=
 github.com/russross/blackfriday v1.5.1 h1:B8ZN6pD4PVofmlDCDUdELeYrbsVIDM/bpjW3v3zgcRc=
 github.com/russross/blackfriday v1.5.1/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
 github.com/sendgrid/rest v2.4.1+incompatible h1:HDib/5xzQREPq34lN3YMhQtMkdXxS/qLp5G3k9a5++4=
 github.com/sendgrid/rest v2.4.1+incompatible/go.mod h1:kXX7q3jZtJXK5c5qK83bSGMdV6tsOE70KbHoqJls4lE=
-github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo=
-github.com/shurcooL/component v0.0.0-20170202220835-f88ec8f54cc4/go.mod h1:XhFIlyj5a1fBNx5aJTbKoIq0mNaPvOagO+HjB3EtxrY=
-github.com/shurcooL/events v0.0.0-20180517181903-37636e399bf5/go.mod h1:5u70Mqkb5O5cxEA8nxTsgrgLehJeAw6Oc4Ab1c/P1HM=
-github.com/shurcooL/github_flavored_markdown v0.0.0-20180602233135-8913699a52e3/go.mod h1:19y9eBxWq15wrq3NRr6osGtk0dkbHhO6uznyrOtrBsE=
-github.com/shurcooL/go v0.0.0-20180423040247-9e1955d9fb6e/go.mod h1:TDJrrUr11Vxrven61rcy3hJMUqaf/CLWYhHNPmT14Lk=
-github.com/shurcooL/go-goon v0.0.0-20170922171312-37c2f522c041/go.mod h1:N5mDOmsrJOB+vfqUK+7DmDyjhSLIIBnXo9lvZJj3MWQ=
-github.com/shurcooL/gofontwoff v0.0.0-20180329035133-29b52fc0a18d/go.mod h1:05UtEgK5zq39gLST6uB0cf3NEHjETfB4Fgr3Gx5R9Vw=
-github.com/shurcooL/gopherjslib v0.0.0-20160914041154-feb6d3990c2c/go.mod h1:8d3azKNyqcHP1GaQE/c6dDgjkgSx2BZ4IoEi4F1reUI=
-github.com/shurcooL/highlight_diff v0.0.0-20170515013008-09bb4053de1b/go.mod h1:ZpfEhSmds4ytuByIcDnOLkTHGUI6KNqRNPDLHDk+mUU=
-github.com/shurcooL/highlight_go v0.0.0-20170515013102-78fb10f4a5f8/go.mod h1:UDKB5a1T23gOMUJrI+uSuH0VRDStOiUVSjBTRDVBVag=
-github.com/shurcooL/htmlg v0.0.0-20170918183704-d01228ac9e50/go.mod h1:zPn1wHpTIePGnXSHpsVPWEktKXHr6+SS6x/IKRb7cpw=
-github.com/shurcooL/httperror v0.0.0-20170206035902-86b7830d14cc/go.mod h1:aYMfkZ6DWSJPJ6c4Wwz3QtW22G7mf/PEgaB9k/ik5+Y=
-github.com/shurcooL/httpfs v0.0.0-20171119174359-809beceb2371/go.mod h1:ZY1cvUeJuFPAdZ/B6v7RHavJWZn2YPVFQ1OSXhCGOkg=
-github.com/shurcooL/httpgzip v0.0.0-20180522190206-b1c53ac65af9/go.mod h1:919LwcH0M7/W4fcZ0/jy0qGght1GIhqyS/EgWGH2j5Q=
-github.com/shurcooL/issues v0.0.0-20180509033703-c5ffda838306/go.mod h1:e2qWDig5bLteJ4fwvDAc2NHzqFEthkqn7aOZAOpj+PQ=
-github.com/shurcooL/issuesapp v0.0.0-20180602232740-048589ce2241/go.mod h1:NPpHK2TI7iSaM0buivtFUc9offApnI0Alt/K8hcHy0I=
-github.com/shurcooL/notifications v0.0.0-20180509033327-dff011de8119/go.mod h1:b5uSkrEVM1jQUspwbixRBhaIjIzL2xazXp6kntxYle0=
-github.com/shurcooL/octicon v0.0.0-20180602230221-c42b0e3b24d9/go.mod h1:eWdoE5JD4R5UVWDucdOPg1g2fqQRq78IQa9zlOV1vpQ=
-github.com/shurcooL/reactions v0.0.0-20180602233045-253d879cae26/go.mod h1:TCR1lToEk4d2s07G3XGfz2QrgHXg4RJBvjrOozvoWfk=
-github.com/shurcooL/sanitized_anchor_name v0.0.0-20170918181015-86672fcb3f95/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
-github.com/shurcooL/users v0.0.0-20180125191416-49c67e49c537/go.mod h1:QJTqeLYEDaXHZDBsXlPCDqdhQuJkuw4NOtaxYe3xii4=
-github.com/shurcooL/webdavfs v0.0.0-20170829043945-18c3829fa133/go.mod h1:hKmq5kWdCj2z2KEozexVbfEZIWiTjhE0+UjmZgPqehw=
-github.com/sourcegraph/annotate v0.0.0-20160123013949-f4cad6c6324d/go.mod h1:UdhH50NIW0fCiwBSr0co2m7BnFLdv4fQTgdqdJTHFeE=
-github.com/sourcegraph/syntaxhighlight v0.0.0-20170531221838-bd320f5d308e/go.mod h1:HuIsMU8RRBOtsCgI77wP899iHVBQpCmg4ErYMZB+2IA=
 github.com/ssor/bom v0.0.0-20170718123548-6386211fdfcf h1:pvbZ0lM0XWPBqUKqFU8cmavspvIl9nulOYwdy6IFRRo=
 github.com/ssor/bom v0.0.0-20170718123548-6386211fdfcf/go.mod h1:RJID2RhlZKId02nZ62WenDCkgHFerpIOmW0iT7GKmXM=
 github.com/streamrail/concurrent-map v0.0.0-20160823150647-8bf1e9bacbf6 h1:XklXvOrWxWCDX2n4vdEQWkjuIP820XD6C4kF0O0FzH4=
 github.com/streamrail/concurrent-map v0.0.0-20160823150647-8bf1e9bacbf6/go.mod h1:yqDD2twFAqxvvH5gtpwwgLsj5L1kbNwtoPoDOwBzXcs=
 github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
-github.com/tarm/serial v0.0.0-20180114052751-eaafced92e96/go.mod h1:kDXzergiv9cbyO7IOYJZWg1U88JhDg3PB6klq9Hg2pA=
 github.com/tmc/scp v0.0.0-20170824174625-f7b48647feef h1:7D6Nm4D6f0ci9yttWaKjM1TMAXrH5Su72dojqYGntFY=
 github.com/tmc/scp v0.0.0-20170824174625-f7b48647feef/go.mod h1:WLFStEdnJXpjK8kd4qKLwQKX/1vrDzp5BcDyiZJBHJM=
 github.com/velour/chat v0.0.0-20180713122344-fd1d1606cb89/go.mod h1:ejwOYCjnDMyO5LXFXRARQJGBZ6xQJZ3rgAHE5drSuMM=
@@ -203,52 +155,34 @@ github.com/yuin/gluare v0.0.0-20170607022532-d7c94f1a80ed h1:I1vcLHWU9m30rA90rMr
 github.com/yuin/gluare v0.0.0-20170607022532-d7c94f1a80ed/go.mod h1:9w6KSdZh23UWqOywWsRLUcJUrUNjRh4Ql3z9uVgnSP4=
 github.com/yuin/gopher-lua v0.0.0-20181109042959-a0dfe84f6227 h1:GRy+0tGtORsCA+CJUMfhLuN71eQ0LtsQRDBQKbzESdc=
 github.com/yuin/gopher-lua v0.0.0-20181109042959-a0dfe84f6227/go.mod h1:fFiAh+CowNFr0NK5VASokuwKwkbacRmHsVA7Yb1Tqac=
-go.opencensus.io v0.14.0/go.mod h1:UffZAU+4sDEINUGP/B7UfBBkq4fqLu9zXAX7ke6CHW0=
-go4.org v0.0.0-20180417224846-9599cf28b011/go.mod h1:MkTOUMDaeVYJUOUsaDXIhWPZYa1yOyC1qaOBpL57BhE=
 go4.org v0.0.0-20180809161055-417644f6feb5 h1:+hE86LblG4AyDgwMCLTE6FOlM9+qjHSYS+rKqxUVdsM=
 go4.org v0.0.0-20180809161055-417644f6feb5/go.mod h1:MkTOUMDaeVYJUOUsaDXIhWPZYa1yOyC1qaOBpL57BhE=
-golang.org/x/build v0.0.0-20181004175654-90ec83e7f349 h1:XPddsYqUEmKO0sVe5QT00QlgT+um6zpdvTXa4TOwRug=
-golang.org/x/build v0.0.0-20181004175654-90ec83e7f349/go.mod h1:eyWLc0/Jmz/CqV4n9TcikWbe+qYZi9gRRwevxMtJxLE=
-golang.org/x/crypto v0.0.0-20180807104621-f027049dab0a/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20181001203147-e3636079e1a4 h1:Vk3wNqEZwyGyei9yq5ekj7frek2u7HUfffJ1/opblzc=
 golang.org/x/crypto v0.0.0-20181001203147-e3636079e1a4/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/image v0.0.0-20180926015637-991ec62608f3 h1:5IfA9fqItkh2alJW94tvQk+6+RF9MW2q9DzwE8DBddQ=
 golang.org/x/image v0.0.0-20180926015637-991ec62608f3/go.mod h1:ux5Hcp/YLpHSI86hEcLt0YII63i6oz57MZXIpbrjZUs=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20180808004115-f9ce57c11b24/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180811021610-c39426892332/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180926154720-4dfa2610cdf3 h1:dgd4x4kJt7G4k4m93AYLzM8Ni6h2qLTfh9n9vXJT3/0=
 golang.org/x/net v0.0.0-20180926154720-4dfa2610cdf3/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/oauth2 v0.0.0-20180724155351-3d292e4d0cdc/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20181003184128-c57b0facaced h1:4oqSq7eft7MdPKBGQK11X9WYUxmj6ZLgGTqYIbY1kyw=
 golang.org/x/oauth2 v0.0.0-20181003184128-c57b0facaced/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
-golang.org/x/perf v0.0.0-20180704124530-6e6d33e29852/go.mod h1:JLpeXjPJfIyPr5TlbXLkXWLhP8nz10XfvxElABhCtcw=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f h1:wMNYb4v58l5UBM7MYRLPG6ZhfOqbKu7X5eyFl8ZhKvA=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sys v0.0.0-20180807162357-acbc56fc7007/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181004145325-8469e314837c h1:SJ7JoQNVl3mC7EWkkONgBWgCno8LcABIJwFMkWBC+EY=
 golang.org/x/sys v0.0.0-20181004145325-8469e314837c/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
-golang.org/x/tools v0.0.0-20180807205940-ca6481ae5650/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-google.golang.org/api v0.0.0-20180808000436-6e1e03fd226b/go.mod h1:4mhQ8q/RsB7i+udVvVy5NUi08OU8ZlA0gRVgrF7VFY0=
-google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.2.0 h1:S0iUepdCWODXRvtE+gcRDd15L+k+k1AiHlMiMjefH24=
 google.golang.org/appengine v1.2.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
-google.golang.org/genproto v0.0.0-20180731170733-daca94659cb5/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
-google.golang.org/grpc v1.14.0/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
 gopkg.in/tucnak/telebot.v2 v2.0.0-20181115150921-4688194c178d h1:rwP+DFa5TQOEP7iCCc2z0ql57CtuI+divggCiXbuYR0=
 gopkg.in/tucnak/telebot.v2 v2.0.0-20181115150921-4688194c178d/go.mod h1:EmWSFwexO5JPTHiU7gDd9HMCCiyatACwO0HhuKNsOd0=
 gopkg.in/xmlpath.v2 v2.0.0-20150820204837-860cbeca3ebc h1:LMEBgNcZUqXaP7evD1PZcL6EcDVa2QOFuI+cqM3+AJM=
 gopkg.in/xmlpath.v2 v2.0.0-20150820204837-860cbeca3ebc/go.mod h1:N8UOSI6/c2yOpa/XDz3KVUiegocTziPiqNkeNTMiG1k=
 gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-grpc.go4.org v0.0.0-20170609214715-11d0a25b4919/go.mod h1:77eQGdRu53HpSqPFJFmuJdjuHRquDANNeA4x7B8WQ9o=
 layeh.com/gopher-json v0.0.0-20181116191917-d3d498bb4913 h1:7GSXubN0n2gOZFLkm72eB1ep93KbqEw0Heiz2h6CQGE=
 layeh.com/gopher-json v0.0.0-20181116191917-d3d498bb4913/go.mod h1:ivKkcY8Zxw5ba0jldhZCYYQfGdb2K6u9tbYK1AwMIBc=
 layeh.com/gopher-luar v1.0.4 h1:BFgt94J/CXh4HkDcE2b7A7pBaVeQKEVfHEBRKL/K/Tc=
diff --git a/tools_install.go b/tools_install.go
index 0af98b1..636b5c5 100644
--- a/tools_install.go
+++ b/tools_install.go
@@ -16,7 +16,7 @@ func main() {
 
 	env := append(os.Environ(), []string{"GO111MODULE=on"}...)
 
-	for _, tool := range []string{"github.com/russross/blackfriday-tool", "github.com/robertkrimen/godocdown/godocdown"} {
+	for _, tool := range []string{"github.com/robertkrimen/godocdown/godocdown"} {
 		yeet.ShouldWork(ctx, env, yeet.WD, "go", "install", tool)
 	}
 }
diff --git a/version/ko/main.go b/version/ko/main.go
deleted file mode 100644
index c1a30b6..0000000
--- a/version/ko/main.go
+++ /dev/null
@@ -1,21 +0,0 @@
-package main
-
-import (
-	"os"
-	"runtime"
-
-	"github.com/Xe/x/version"
-	_ "github.com/joho/godotenv/autoload"
-)
-
-func main() {
-	ver := os.Getenv("GO_VERSION")
-
-	if ver == "" {
-		ver = runtime.Version()
-	} else {
-		ver = "go" + ver
-	}
-
-	version.Run(ver)
-}
diff --git a/version/version.go b/version/version.go
deleted file mode 100644
index 7ae7894..0000000
--- a/version/version.go
+++ /dev/null
@@ -1,455 +0,0 @@
-// Copyright 2016 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// The version package permits running a specific version of Go.
-package version
-
-import (
-	"archive/tar"
-	"archive/zip"
-	"compress/gzip"
-	"crypto/sha256"
-	"errors"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"log"
-	"net/http"
-	"os"
-	"os/exec"
-	"os/user"
-	"path"
-	"path/filepath"
-	"runtime"
-	"strings"
-	"time"
-
-	"golang.org/x/build/envutil"
-)
-
-func init() {
-	http.DefaultTransport = &userAgentTransport{http.DefaultTransport}
-}
-
-// Run runs the "go" tool of the provided Go version.
-func Run(version string) {
-	log.SetFlags(0)
-
-	root, err := goroot(version)
-	if err != nil {
-		log.Fatalf("%s: %v", version, err)
-	}
-
-	if len(os.Args) == 2 && os.Args[1] == "download" {
-		if err := install(root, version); err != nil {
-			log.Fatalf("%s: download failed: %v", version, err)
-		}
-		os.Exit(0)
-	}
-
-	if _, err := os.Stat(filepath.Join(root, unpackedOkay)); err != nil {
-		log.Fatalf("%s: not downloaded. Run '%s download' to install to %v", version, os.Args[0], root)
-	}
-
-	gobin := filepath.Join(root, "bin", "go"+exe())
-	cmd := exec.Command(gobin, os.Args[1:]...)
-	cmd.Stdin = os.Stdin
-	cmd.Stdout = os.Stdout
-	cmd.Stderr = os.Stderr
-	cmd.Env = envutil.Dedup(caseInsensitiveEnv, append(os.Environ(), "GOROOT="+root))
-	if err := cmd.Run(); err != nil {
-		// TODO: return the same exit status maybe.
-		os.Exit(1)
-	}
-	os.Exit(0)
-}
-
-// install installs a version of Go to the named target directory, creating the
-// directory as needed.
-func install(targetDir, version string) error {
-	if _, err := os.Stat(filepath.Join(targetDir, unpackedOkay)); err == nil {
-		log.Printf("%s: already downloaded in %v", version, targetDir)
-		return nil
-	}
-
-	goURL, err := versionArchiveURL(version)
-	if err != nil {
-		return err
-	}
-	if err := os.MkdirAll(targetDir, 0755); err != nil {
-		return err
-	}
-	res, err := http.Head(goURL)
-	if err != nil {
-		return err
-	}
-	if res.StatusCode == http.StatusNotFound {
-		return fmt.Errorf("no binary release of %v for %v/%v at %v", version, getOS(), runtime.GOARCH, goURL)
-	}
-	if res.StatusCode != http.StatusOK {
-		return fmt.Errorf("server returned %v checking size of %v", http.StatusText(res.StatusCode), goURL)
-	}
-	base := path.Base(goURL)
-	archiveFile := filepath.Join(targetDir, base)
-	defer os.RemoveAll(archiveFile)
-	if fi, err := os.Stat(archiveFile); err != nil || fi.Size() != res.ContentLength {
-		if err != nil && !os.IsNotExist(err) {
-			// Something weird. Don't try to download.
-			return err
-		}
-		if err := copyFromURL(archiveFile, goURL); err != nil {
-			return fmt.Errorf("error downloading %v: %v", goURL, err)
-		}
-		fi, err = os.Stat(archiveFile)
-		if err != nil {
-			return err
-		}
-		if fi.Size() != res.ContentLength {
-			return fmt.Errorf("downloaded file %s size %v doesn't match server size %v", archiveFile, fi.Size(), res.ContentLength)
-		}
-	}
-	wantSHA, err := slurpURLToString(goURL + ".sha256")
-	if err != nil {
-		return err
-	}
-	if err := verifySHA256(archiveFile, strings.TrimSpace(wantSHA)); err != nil {
-		return fmt.Errorf("error verifying SHA256 of %v: %v", archiveFile, err)
-	}
-	log.Printf("Unpacking %v ...", archiveFile)
-	if err := unpackArchive(targetDir, archiveFile); err != nil {
-		return fmt.Errorf("extracting archive %v: %v", archiveFile, err)
-	}
-	if err := ioutil.WriteFile(filepath.Join(targetDir, unpackedOkay), nil, 0644); err != nil {
-		return err
-	}
-	log.Printf("Success. You may now run '%v'", os.Args[0])
-	return nil
-}
-
-// unpackArchive unpacks the provided archive zip or tar.gz file to targetDir,
-// removing the "go/" prefix from file entries.
-func unpackArchive(targetDir, archiveFile string) error {
-	switch {
-	case strings.HasSuffix(archiveFile, ".zip"):
-		return unpackZip(targetDir, archiveFile)
-	case strings.HasSuffix(archiveFile, ".tar.gz"):
-		return unpackTarGz(targetDir, archiveFile)
-	default:
-		return errors.New("unsupported archive file")
-	}
-}
-
-// unpackTarGz is the tar.gz implementation of unpackArchive.
-func unpackTarGz(targetDir, archiveFile string) error {
-	r, err := os.Open(archiveFile)
-	if err != nil {
-		return err
-	}
-	defer r.Close()
-	madeDir := map[string]bool{}
-	zr, err := gzip.NewReader(r)
-	if err != nil {
-		return err
-	}
-	tr := tar.NewReader(zr)
-	for {
-		f, err := tr.Next()
-		if err == io.EOF {
-			break
-		}
-		if err != nil {
-			return err
-		}
-		if !validRelPath(f.Name) {
-			return fmt.Errorf("tar file contained invalid name %q", f.Name)
-		}
-		rel := filepath.FromSlash(strings.TrimPrefix(f.Name, "go/"))
-		abs := filepath.Join(targetDir, rel)
-
-		fi := f.FileInfo()
-		mode := fi.Mode()
-		switch {
-		case mode.IsRegular():
-			// Make the directory. This is redundant because it should
-			// already be made by a directory entry in the tar
-			// beforehand. Thus, don't check for errors; the next
-			// write will fail with the same error.
-			dir := filepath.Dir(abs)
-			if !madeDir[dir] {
-				if err := os.MkdirAll(filepath.Dir(abs), 0755); err != nil {
-					return err
-				}
-				madeDir[dir] = true
-			}
-			wf, err := os.OpenFile(abs, os.O_RDWR|os.O_CREATE|os.O_TRUNC, mode.Perm())
-			if err != nil {
-				return err
-			}
-			n, err := io.Copy(wf, tr)
-			if closeErr := wf.Close(); closeErr != nil && err == nil {
-				err = closeErr
-			}
-			if err != nil {
-				return fmt.Errorf("error writing to %s: %v", abs, err)
-			}
-			if n != f.Size {
-				return fmt.Errorf("only wrote %d bytes to %s; expected %d", n, abs, f.Size)
-			}
-			if !f.ModTime.IsZero() {
-				if err := os.Chtimes(abs, f.ModTime, f.ModTime); err != nil {
-					// benign error. Gerrit doesn't even set the
-					// modtime in these, and we don't end up relying
-					// on it anywhere (the gomote push command relies
-					// on digests only), so this is a little pointless
-					// for now.
-					log.Printf("error changing modtime: %v", err)
-				}
-			}
-		case mode.IsDir():
-			if err := os.MkdirAll(abs, 0755); err != nil {
-				return err
-			}
-			madeDir[abs] = true
-		default:
-			return fmt.Errorf("tar file entry %s contained unsupported file type %v", f.Name, mode)
-		}
-	}
-	return nil
-}
-
-// unpackZip is the zip implementation of unpackArchive.
-func unpackZip(targetDir, archiveFile string) error {
-	zr, err := zip.OpenReader(archiveFile)
-	if err != nil {
-		return err
-	}
-	defer zr.Close()
-
-	for _, f := range zr.File {
-		name := strings.TrimPrefix(f.Name, "go/")
-
-		outpath := filepath.Join(targetDir, name)
-		if f.FileInfo().IsDir() {
-			if err := os.MkdirAll(outpath, 0755); err != nil {
-				return err
-			}
-			continue
-		}
-
-		rc, err := f.Open()
-		if err != nil {
-			return err
-		}
-
-		// File
-		if err := os.MkdirAll(filepath.Dir(outpath), 0755); err != nil {
-			return err
-		}
-		out, err := os.OpenFile(outpath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, f.Mode())
-		if err != nil {
-			return err
-		}
-		_, err = io.Copy(out, rc)
-		rc.Close()
-		if err != nil {
-			out.Close()
-			return err
-		}
-		if err := out.Close(); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-// verifySHA256 reports whether the named file has contents with
-// SHA-256 of the given wantHex value.
-func verifySHA256(file, wantHex string) error {
-	f, err := os.Open(file)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
-	hash := sha256.New()
-	if _, err := io.Copy(hash, f); err != nil {
-		return err
-	}
-	if fmt.Sprintf("%x", hash.Sum(nil)) != wantHex {
-		return fmt.Errorf("%s corrupt? does not have expected SHA-256 of %v", file, wantHex)
-	}
-	return nil
-}
-
-// slurpURLToString downloads the given URL and returns it as a string.
-func slurpURLToString(url_ string) (string, error) {
-	res, err := http.Get(url_)
-	if err != nil {
-		return "", err
-	}
-	defer res.Body.Close()
-	if res.StatusCode != http.StatusOK {
-		return "", fmt.Errorf("%s: %v", url_, res.Status)
-	}
-	slurp, err := ioutil.ReadAll(res.Body)
-	if err != nil {
-		return "", fmt.Errorf("reading %s: %v", url_, err)
-	}
-	return string(slurp), nil
-}
-
-// copyFromURL downloads srcURL to dstFile.
-func copyFromURL(dstFile, srcURL string) (err error) {
-	f, err := os.Create(dstFile)
-	if err != nil {
-		return err
-	}
-	defer func() {
-		if err != nil {
-			f.Close()
-			os.Remove(dstFile)
-		}
-	}()
-	c := &http.Client{
-		Transport: &userAgentTransport{&http.Transport{
-			// It's already compressed. Prefer accurate ContentLength.
-			// (Not that GCS would try to compress it, though)
-			DisableCompression: true,
-			DisableKeepAlives:  true,
-			Proxy:              http.ProxyFromEnvironment,
-		}},
-	}
-	res, err := c.Get(srcURL)
-	if err != nil {
-		return err
-	}
-	defer res.Body.Close()
-	if res.StatusCode != http.StatusOK {
-		return errors.New(res.Status)
-	}
-	pw := &progressWriter{w: f, total: res.ContentLength}
-	n, err := io.Copy(pw, res.Body)
-	if err != nil {
-		return err
-	}
-	if res.ContentLength != -1 && res.ContentLength != n {
-		return fmt.Errorf("copied %v bytes; expected %v", n, res.ContentLength)
-	}
-	pw.update() // 100%
-	return f.Close()
-}
-
-type progressWriter struct {
-	w     io.Writer
-	n     int64
-	total int64
-	last  time.Time
-}
-
-func (p *progressWriter) update() {
-	end := " ..."
-	if p.n == p.total {
-		end = ""
-	}
-	fmt.Fprintf(os.Stderr, "Downloaded %0.1f%% (%d / %d bytes)%s\n",
-		(100.0*float64(p.n))/float64(p.total),
-		p.n, p.total, end)
-}
-
-func (p *progressWriter) Write(buf []byte) (n int, err error) {
-	n, err = p.w.Write(buf)
-	p.n += int64(n)
-	if now := time.Now(); now.Unix() != p.last.Unix() {
-		p.update()
-		p.last = now
-	}
-	return
-}
-
-// getOS returns runtime.GOOS. It exists as a function just for lazy
-// testing of the Windows zip path when running on Linux/Darwin.
-func getOS() string {
-	return runtime.GOOS
-}
-
-// versionArchiveURL returns the zip or tar.gz URL of the given Go version.
-func versionArchiveURL(version string) (string, error) {
-	goos := getOS()
-
-	// TODO: Maybe we should parse
-	// https://storage.googleapis.com/go-builder-data/dl-index.txt ?
-	// Let's just guess the URL for now and see if it's there.
-	// Then we don't have to maintain that txt file too.
-	ext := ".tar.gz"
-	if goos == "windows" {
-		ext = ".zip"
-	}
-	arch := runtime.GOARCH
-	if goos == "linux" && runtime.GOARCH == "arm" {
-		arch = "armv6l"
-	}
-	// https://dl.google.com/go/go1.11.2.linux-amd64.tar.gz
-	return "https://dl.google.com/go/" + version + "." + goos + "-" + arch + ext, nil
-}
-
-const caseInsensitiveEnv = runtime.GOOS == "windows"
-
-// unpackedOkay is a sentinel zero-byte file to indicate that the Go
-// version was downloaded and unpacked successfully.
-const unpackedOkay = ".unpacked-success"
-
-func exe() string {
-	if runtime.GOOS == "windows" {
-		return ".exe"
-	}
-	return ""
-}
-
-func goroot(version string) (string, error) {
-	home, err := homedir()
-	if err != nil {
-		return "", fmt.Errorf("failed to get home directory: %v", err)
-	}
-	return filepath.Join(home, ".ko", "installed", version), nil
-}
-
-func homedir() (string, error) {
-	switch getOS() {
-	case "plan9":
-		return "", fmt.Errorf("%q not yet supported", runtime.GOOS)
-	case "windows":
-		if dir := os.Getenv("USERPROFILE"); dir != "" {
-			return dir, nil
-		}
-		return "", errors.New("can't find user home directory; %USERPROFILE% is empty")
-	default:
-		if dir := os.Getenv("HOME"); dir != "" {
-			return dir, nil
-		}
-		if u, err := user.Current(); err == nil && u.HomeDir != "" {
-			return u.HomeDir, nil
-		}
-		return "", errors.New("can't find user home directory; $HOME is empty")
-	}
-}
-
-func validRelPath(p string) bool {
-	if p == "" || strings.Contains(p, `\`) || strings.HasPrefix(p, "/") || strings.Contains(p, "../") {
-		return false
-	}
-	return true
-}
-
-type userAgentTransport struct {
-	rt http.RoundTripper
-}
-
-func (uat userAgentTransport) RoundTrip(r *http.Request) (*http.Response, error) {
-	version := runtime.Version()
-	if strings.Contains(version, "devel") {
-		// Strip the SHA hash and date. We don't want spaces or other tokens (see RFC2616 14.43)
-		version = "devel"
-	}
-	r.Header.Set("User-Agent", "github-com-Xe-x/"+version)
-	return uat.rt.RoundTrip(r)
-}