golang を googlecolab で使いたい。


##googlecolab



https://colab.research.google.com/gist/dauuricus/a42283bdf2cbd16a47ae2afdc3f72622/golang-notebook.ipynb

![colab](https://camo.githubusercontent.com/52feade06f2fecbf006889a904d221e6a730c194/68747470733a2f2f636f6c61622e72657365617263682e676f6f676c652e636f6d2f6173736574732f636f6c61622d62616467652e737667)

**How to run Golang in Google Colab.**

1.   Run the first code cell, using the python runtime. 
2.   Refresh the page to use the Go kernel (gophernotes).
3.   Test that everything went well by running the Golang cells below.

```bash
!add-apt-repository ppa:longsleep/golang-backports -y
!apt update
!apt install golang-go
%env GOPATH=/root/go
!go get -u github.com/gopherdata/gophernotes
!cp ~/go/bin/gophernotes /usr/bin/
!mkdir /usr/local/share/jupyter/kernels/gophernotes
!cp ~/go/src/github.com/gopherdata/gophernotes/kernel/* \
       /usr/local/share/jupyter/kernels/gophernotes
```

Rf.
https://www.ptrace-security.com/blog/how-to-run-golang-in-google-colab/

<details><summary>log</summary>
<div>

```
Ign:1 https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64  InRelease
Ign:2 https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1804/x86_64  InRelease
Get:3 https://cloud.r-project.org/bin/linux/ubuntu bionic-cran40/ InRelease [3,626 B]
Get:4 https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64  Release [697 B]
Hit:5 https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1804/x86_64  Release
Get:6 https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64  Release.gpg [836 B]
Get:7 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB]
Get:8 http://ppa.launchpad.net/c2d4u.team/c2d4u4.0+/ubuntu bionic InRelease [15.9 kB]
Hit:9 http://archive.ubuntu.com/ubuntu bionic InRelease
Get:11 http://archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB]
Ign:12 https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64  Packages
Get:12 https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64  Packages [740 kB]
Hit:13 http://ppa.launchpad.net/cran/libgit2/ubuntu bionic InRelease
Get:14 http://security.ubuntu.com/ubuntu bionic-security/restricted amd64 Packages [395 kB]
Get:15 http://ppa.launchpad.net/deadsnakes/ppa/ubuntu bionic InRelease [15.9 kB]
Get:16 http://archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB]
Get:17 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages [2,116 kB]
Hit:18 http://ppa.launchpad.net/graphics-drivers/ppa/ubuntu bionic InRelease
Get:19 http://security.ubuntu.com/ubuntu bionic-security/multiverse amd64 Packages [24.5 kB]
Get:20 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 Packages [1,410 kB]
Get:21 http://ppa.launchpad.net/longsleep/golang-backports/ubuntu bionic InRelease [15.4 kB]
Get:22 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages [2,546 kB]
Get:23 http://ppa.launchpad.net/c2d4u.team/c2d4u4.0+/ubuntu bionic/main Sources [1,756 kB]
Get:24 http://archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64 Packages [31.4 kB]
Get:25 http://archive.ubuntu.com/ubuntu bionic-updates/restricted amd64 Packages [425 kB]
Get:26 http://archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages [2,181 kB]
Get:27 http://ppa.launchpad.net/c2d4u.team/c2d4u4.0+/ubuntu bionic/main amd64 Packages [899 kB]
Get:28 http://ppa.launchpad.net/deadsnakes/ppa/ubuntu bionic/main amd64 Packages [39.5 kB]
Get:29 http://ppa.launchpad.net/longsleep/golang-backports/ubuntu bionic/main amd64 Packages [6,000 B]
Fetched 12.9 MB in 5s (2,652 kB/s)
Reading package lists... Done
Ign:1 https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64  InRelease
Hit:2 https://cloud.r-project.org/bin/linux/ubuntu bionic-cran40/ InRelease
Ign:3 https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1804/x86_64  InRelease
Hit:4 https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64  Release
Hit:5 https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1804/x86_64  Release
Hit:6 http://ppa.launchpad.net/c2d4u.team/c2d4u4.0+/ubuntu bionic InRelease
Hit:7 http://security.ubuntu.com/ubuntu bionic-security InRelease
Hit:8 http://archive.ubuntu.com/ubuntu bionic InRelease
Hit:10 http://ppa.launchpad.net/cran/libgit2/ubuntu bionic InRelease
Hit:11 http://archive.ubuntu.com/ubuntu bionic-updates InRelease
Hit:13 http://archive.ubuntu.com/ubuntu bionic-backports InRelease
Hit:14 http://ppa.launchpad.net/deadsnakes/ppa/ubuntu bionic InRelease
Hit:15 http://ppa.launchpad.net/graphics-drivers/ppa/ubuntu bionic InRelease
Hit:16 http://ppa.launchpad.net/longsleep/golang-backports/ubuntu bionic InRelease
Reading package lists... Done
Building dependency tree       
Reading state information... Done
79 packages can be upgraded. Run 'apt list --upgradable' to see them.
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  golang-1.16-go golang-1.16-src golang-src
Suggested packages:
  bzr | brz mercurial subversion
The following NEW packages will be installed:
  golang-1.16-go golang-1.16-src golang-go golang-src
0 upgraded, 4 newly installed, 0 to remove and 79 not upgraded.
Need to get 65.7 MB of archives.
After this operation, 377 MB of additional disk space will be used.
Get:1 http://ppa.launchpad.net/longsleep/golang-backports/ubuntu bionic/main amd64 golang-1.16-src amd64 1.16.3-2longsleep1+focal [14.3 MB]
Get:2 http://ppa.launchpad.net/longsleep/golang-backports/ubuntu bionic/main amd64 golang-1.16-go amd64 1.16.3-2longsleep1+focal [51.4 MB]
Get:3 http://ppa.launchpad.net/longsleep/golang-backports/ubuntu bionic/main amd64 golang-src amd64 2:1.16-1longsleep1+bionic [3,952 B]
Get:4 http://ppa.launchpad.net/longsleep/golang-backports/ubuntu bionic/main amd64 golang-go amd64 2:1.16-1longsleep1+bionic [23.0 kB]
Fetched 65.7 MB in 6s (10.6 MB/s)
Selecting previously unselected package golang-1.16-src.
(Reading database ... 160983 files and directories currently installed.)
Preparing to unpack .../golang-1.16-src_1.16.3-2longsleep1+focal_amd64.deb ...
Unpacking golang-1.16-src (1.16.3-2longsleep1+focal) ...
Selecting previously unselected package golang-1.16-go.
Preparing to unpack .../golang-1.16-go_1.16.3-2longsleep1+focal_amd64.deb ...
Unpacking golang-1.16-go (1.16.3-2longsleep1+focal) ...
Selecting previously unselected package golang-src.
Preparing to unpack .../golang-src_2%3a1.16-1longsleep1+bionic_amd64.deb ...
Unpacking golang-src (2:1.16-1longsleep1+bionic) ...
Selecting previously unselected package golang-go.
Preparing to unpack .../golang-go_2%3a1.16-1longsleep1+bionic_amd64.deb ...
Unpacking golang-go (2:1.16-1longsleep1+bionic) ...
Setting up golang-1.16-src (1.16.3-2longsleep1+focal) ...
Setting up golang-1.16-go (1.16.3-2longsleep1+focal) ...
Setting up golang-src (2:1.16-1longsleep1+bionic) ...
Setting up golang-go (2:1.16-1longsleep1+bionic) ...
Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
env: GOPATH=/root/go
go: downloading github.com/gopherdata/gophernotes v0.7.2
go: downloading github.com/cosmos72/gomacro v0.0.0-20210316200708-0b986404ea46
go: downloading github.com/cosmos72/gomacro v0.0.0-20210413192348-a4790c998211
go: downloading github.com/go-zeromq/zmq4 v0.9.0
go: downloading github.com/gofrs/uuid v3.3.0+incompatible
go: downloading github.com/gofrs/uuid v1.2.0
go: downloading github.com/go-zeromq/zmq4 v0.13.0
go: downloading github.com/gofrs/uuid v4.0.0+incompatible
go: downloading golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1
go: downloading github.com/peterh/liner v1.2.0
go: downloading github.com/peterh/liner v1.2.1
go: downloading github.com/go-zeromq/goczmq/v4 v4.2.2
go: downloading golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9
go: downloading golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
go: downloading github.com/go-zeromq/goczmq v4.1.0+incompatible
go: downloading golang.org/x/tools v0.0.0-20201023150057-2f4fa188d925
go: downloading github.com/mattn/go-runewidth v0.0.9
go: downloading github.com/mattn/go-runewidth v0.0.12
go: downloading golang.org/x/tools v0.1.0
go: downloading golang.org/x/mod v0.3.0
go: downloading golang.org/x/mod v0.4.2
go: downloading golang.org/x/sys v0.0.0-20210119212857-b64e53b001e4
go: downloading github.com/rivo/uniseg v0.1.0
go: downloading github.com/rivo/uniseg v0.2.0
go: downloading golang.org/x/sys v0.0.0-20210421221651-33663a62ff08
cp: cannot stat '/root/go/src/github.com/gopherdata/gophernotes/kernel/*': No such file or directory
```

</div></details>

above section is not working.
このスクリプトだとインストールに失敗します。
`!cp ~/go/src/github.com/gopherdata/gophernotes/kernel/*`
この箇所でエラーになります。

結果:
![Screenshot_20210421-193609_kindlephoto-277179743.png](https://qiita-image-store.s3.ap-northeast-1.amazonaws.com/0/225786/83efcaf2-0302-0ab5-a394-221cbd6c1d89.png)

でも、大きな間違いはなさそう。良いところまできているような感じです。
ディレクトリの指定に間違いがあるのかもしれない、github上のプログラムのバージョンアップで。どこにgithubからcolab上のローカルにコピー（ちょっとややこしい）されたカーネルがあるのか調べる必要がある。

##using below scripts.

前のセクションのスクリプトではインストールはエラーになります。
おそらく、
`~/go/src/github.com/`
というのが存在しないためです。
以下のスクリプトでテストしてみて下さい。インストールには約2分間かかります。
インストールが済めばページをリロードします。

Rf.
https://gist.github.com/korakot/132725732d9bef9cf5f97654e1addd1f#gistcomment-3660446


```bash
# run this cell first time using python runtime
## Update package-registry
! add-apt-repository ppa:longsleep/golang-backports -y
! apt update
## Install golang and set env-vars
! apt install golang-go
GOPATH="/root/go"
! export GOPATH
## Install gophernotes
REPO_PACKAGE="github.com/gopherdata/gophernotes"
! go get -u $REPO_PACKAGE
! cp "$GOPATH/bin/gophernotes" /usr/bin/

## Clone gophernotes repo
REPO_REMOTE=f"https://{REPO_PACKAGE}"
REPO_LOCAL=f"{GOPATH}/src/{REPO_PACKAGE}"
! mkdir -p $REPO_LOCAL
! git clone "$REPO_REMOTE" "$REPO_LOCAL" || \
    (cd "$REPO_LOCAL" ; git pull)
! cd /content/
## Copy files under kernel directory
GOPHERNOTES_KERNELS="/usr/local/share/jupyter/kernels/gophernotes"
! mkdir -p $GOPHERNOTES_KERNELS
! cp $REPO_LOCAL/kernel/* $GOPHERNOTES_KERNELS
# then refresh, it will now use gophernotes. Skip to golang in later cells
```

結果:
![Screenshot_20210421-185054.png](https://qiita-image-store.s3.ap-northeast-1.amazonaws.com/0/225786/840b213b-70c2-0009-3b0e-a9bb308c3e4d.png)

<details><summary>log</summary>
<div>

```
Ign:1 https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64  InRelease
Get:2 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB]
Get:3 https://cloud.r-project.org/bin/linux/ubuntu bionic-cran40/ InRelease [3,626 B]
Ign:4 https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1804/x86_64  InRelease
Get:5 http://ppa.launchpad.net/c2d4u.team/c2d4u4.0+/ubuntu bionic InRelease [15.9 kB]
Hit:6 http://archive.ubuntu.com/ubuntu bionic InRelease
Get:7 https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64  Release [697 B]
Hit:8 https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1804/x86_64  Release
Get:9 https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64  Release.gpg [836 B]
Get:10 http://archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB]
Hit:11 http://ppa.launchpad.net/cran/libgit2/ubuntu bionic InRelease
Get:12 http://archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB]
Get:13 http://ppa.launchpad.net/deadsnakes/ppa/ubuntu bionic InRelease [15.9 kB]
Hit:14 http://ppa.launchpad.net/graphics-drivers/ppa/ubuntu bionic InRelease
Get:15 http://security.ubuntu.com/ubuntu bionic-security/multiverse amd64 Packages [24.5 kB]
Get:16 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages [2,116 kB]
Get:17 http://ppa.launchpad.net/longsleep/golang-backports/ubuntu bionic InRelease [15.4 kB]
Get:18 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 Packages [1,410 kB]
Get:19 http://security.ubuntu.com/ubuntu bionic-security/restricted amd64 Packages [395 kB]
Ign:21 https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64  Packages
Get:21 https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64  Packages [739 kB]
Get:22 http://ppa.launchpad.net/c2d4u.team/c2d4u4.0+/ubuntu bionic/main Sources [1,756 kB]
Get:23 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages [2,546 kB]
Get:24 http://ppa.launchpad.net/c2d4u.team/c2d4u4.0+/ubuntu bionic/main amd64 Packages [899 kB]
Get:25 http://archive.ubuntu.com/ubuntu bionic-updates/restricted amd64 Packages [425 kB]
Get:26 http://archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64 Packages [31.4 kB]
Get:27 http://archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages [2,182 kB]
Get:28 http://ppa.launchpad.net/deadsnakes/ppa/ubuntu bionic/main amd64 Packages [39.5 kB]
Get:29 http://ppa.launchpad.net/longsleep/golang-backports/ubuntu bionic/main amd64 Packages [6,000 B]
Fetched 12.9 MB in 4s (3,319 kB/s)
Reading package lists... Done
Hit:1 http://security.ubuntu.com/ubuntu bionic-security InRelease
Hit:2 https://cloud.r-project.org/bin/linux/ubuntu bionic-cran40/ InRelease
Ign:3 https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64  InRelease
Hit:4 http://ppa.launchpad.net/c2d4u.team/c2d4u4.0+/ubuntu bionic InRelease
Ign:5 https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1804/x86_64  InRelease
Hit:6 https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64  Release
Hit:7 http://archive.ubuntu.com/ubuntu bionic InRelease
Hit:8 https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1804/x86_64  Release
Hit:9 http://archive.ubuntu.com/ubuntu bionic-updates InRelease
Hit:10 http://ppa.launchpad.net/cran/libgit2/ubuntu bionic InRelease
Hit:11 http://archive.ubuntu.com/ubuntu bionic-backports InRelease
Hit:12 http://ppa.launchpad.net/deadsnakes/ppa/ubuntu bionic InRelease
Hit:13 http://ppa.launchpad.net/graphics-drivers/ppa/ubuntu bionic InRelease
Hit:14 http://ppa.launchpad.net/longsleep/golang-backports/ubuntu bionic InRelease
Reading package lists... Done
Building dependency tree       
Reading state information... Done
78 packages can be upgraded. Run 'apt list --upgradable' to see them.
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  golang-1.16-go golang-1.16-src golang-src
Suggested packages:
  bzr | brz mercurial subversion
The following NEW packages will be installed:
  golang-1.16-go golang-1.16-src golang-go golang-src
0 upgraded, 4 newly installed, 0 to remove and 78 not upgraded.
Need to get 65.7 MB of archives.
After this operation, 377 MB of additional disk space will be used.
Get:1 http://ppa.launchpad.net/longsleep/golang-backports/ubuntu bionic/main amd64 golang-1.16-src amd64 1.16.3-2longsleep1+focal [14.3 MB]
Get:2 http://ppa.launchpad.net/longsleep/golang-backports/ubuntu bionic/main amd64 golang-1.16-go amd64 1.16.3-2longsleep1+focal [51.4 MB]
Get:3 http://ppa.launchpad.net/longsleep/golang-backports/ubuntu bionic/main amd64 golang-src amd64 2:1.16-1longsleep1+bionic [3,952 B]
Get:4 http://ppa.launchpad.net/longsleep/golang-backports/ubuntu bionic/main amd64 golang-go amd64 2:1.16-1longsleep1+bionic [23.0 kB]
Fetched 65.7 MB in 4s (16.3 MB/s)
Selecting previously unselected package golang-1.16-src.
(Reading database ... 160983 files and directories currently installed.)
Preparing to unpack .../golang-1.16-src_1.16.3-2longsleep1+focal_amd64.deb ...
Unpacking golang-1.16-src (1.16.3-2longsleep1+focal) ...
Selecting previously unselected package golang-1.16-go.
Preparing to unpack .../golang-1.16-go_1.16.3-2longsleep1+focal_amd64.deb ...
Unpacking golang-1.16-go (1.16.3-2longsleep1+focal) ...
Selecting previously unselected package golang-src.
Preparing to unpack .../golang-src_2%3a1.16-1longsleep1+bionic_amd64.deb ...
Unpacking golang-src (2:1.16-1longsleep1+bionic) ...
Selecting previously unselected package golang-go.
Preparing to unpack .../golang-go_2%3a1.16-1longsleep1+bionic_amd64.deb ...
Unpacking golang-go (2:1.16-1longsleep1+bionic) ...
Setting up golang-1.16-src (1.16.3-2longsleep1+focal) ...
Setting up golang-1.16-go (1.16.3-2longsleep1+focal) ...
Setting up golang-src (2:1.16-1longsleep1+bionic) ...
Setting up golang-go (2:1.16-1longsleep1+bionic) ...
Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
go: downloading github.com/gopherdata/gophernotes v0.7.2
go: downloading github.com/cosmos72/gomacro v0.0.0-20210316200708-0b986404ea46
go: downloading github.com/cosmos72/gomacro v0.0.0-20210413192348-a4790c998211
go: downloading github.com/go-zeromq/zmq4 v0.9.0
go: downloading github.com/gofrs/uuid v3.3.0+incompatible
go: downloading github.com/gofrs/uuid v1.2.0
go: downloading github.com/gofrs/uuid v4.0.0+incompatible
go: downloading github.com/go-zeromq/zmq4 v0.13.0
go: downloading golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1
go: downloading github.com/peterh/liner v1.2.0
go: downloading github.com/peterh/liner v1.2.1
go: downloading github.com/go-zeromq/goczmq/v4 v4.2.2
go: downloading golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9
go: downloading golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
go: downloading golang.org/x/tools v0.0.0-20201023150057-2f4fa188d925
go: downloading github.com/go-zeromq/goczmq v4.1.0+incompatible
go: downloading github.com/mattn/go-runewidth v0.0.9
go: downloading github.com/mattn/go-runewidth v0.0.12
go: downloading golang.org/x/tools v0.1.0
go: downloading golang.org/x/mod v0.3.0
go: downloading golang.org/x/mod v0.4.2
go: downloading golang.org/x/sys v0.0.0-20210119212857-b64e53b001e4
go: downloading github.com/rivo/uniseg v0.1.0
go: downloading github.com/rivo/uniseg v0.2.0
go: downloading golang.org/x/sys v0.0.0-20210420205809-ac73e9fd8988
Cloning into '/root/go/src/github.com/gopherdata/gophernotes'...
remote: Enumerating objects: 3821, done.
remote: Counting objects: 100% (121/121), done.
remote: Compressing objects: 100% (81/81), done.
remote: Total 3821 (delta 75), reused 78 (delta 39), pack-reused 3700
Receiving objects: 100% (3821/3821), 20.68 MiB | 20.09 MiB/s, done.
Resolving deltas: 100% (2006/2006), done.
```

</div></details>


##test golang

上のセクションで、Go言語用のカーネルのインストールがエラーなく済めば、ブラウザでページをリロードして、Go用のカーネルに切り替えて、よくあるGo言語の文法でGoのプログラムをテスト。

```golang
import "fmt"

fmt.Println("Hello, Gianni!")
```

```golang
for i := 1; i < 10; i++ {
  print(i)
}
```

結果:
![IMG_20210421_185444_634.jpg](https://qiita-image-store.s3.ap-northeast-1.amazonaws.com/0/225786/6c7bb57e-840b-fadf-1807-9aa8f172b9b0.jpeg)

環境変数ていうのかな？現在の初期状態を確認します。

```bash
$go env
```

```
GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/root/.cache/go-build"
GOENV="/root/.config/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/root/go/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/root/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/lib/go-1.16"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/lib/go-1.16/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.16.3"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/dev/null"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build1038342927=/tmp/go-build -gno-record-gcc-switches"
```

だいじなことですけど、コードセルの中で bash コマンドには`$`が要ります。

たとえば、

```bash
$go get github.com/kkdai/youtube/v2
```

```bash
$go env GOPATH
```

```bash
$dir /root/go/
```

```bash
$pwd
```

など。 python のカーネルの場合は、`!`や`%`、`%%`、`%%bash`だった気がしますね。

```bash
### Alternatively: Using "jupyter kernel install <kernel-dir>"
# ! mkdir -p ./gophernotes
# ! cp $REPO_LOCAL/kernel ./gophernotes
# ! jupyter kernel install ./gophernotes
```

注意事項 limitations
https://github.com/gopherdata/gophernotes#limitations

さらに他のカーネルについて知りたい場合は、
jupyter kernel
の情報を調べてみてください。