Improve cjdns tools

src/freedombone

@@ -2284,23 +2284,38 @@ function mesh_cjdns_tools {
     if [ ! -f ~/.bashrc ]; then
         touch ~/.bashrc
     fi
-    export GOPATH=$HOME/projects/go
+
+    export GOPATH=/home/git/go
+    if [ ! -d /home/git ]; then
+        # add a gogs user account
+        adduser --disabled-login --gecos 'Gogs' git
+
+        # install Go
+        if ! grep -q "export GOPATH=/home/git/go" ~/.bashrc; then
+            echo 'export GOPATH=/home/git/go' >> ~/.bashrc
+            echo 'systemctl set-environment GOPATH=/home/git/go' >> ~/.bashrc
+        fi
+        if [ ! -d $GOPATH ]; then
+            mkdir -p $GOPATH
+        fi
+    fi
+
     if ! grep -q "export GOPATH=" ~/.bashrc; then
-        echo 'export GOPATH=$HOME/projects/go' >> ~/.bashrc
+        echo "export GOPATH=$GOPATH" >> ~/.bashrc
     fi
-    if ! grep -q "export PATH=$PATH:$HOME/projects/go/bin" ~/.bashrc; then
-        export PATH=$PATH:$HOME/projects/go/bin
-        echo 'export PATH=$PATH:$HOME/projects/go/bin' >> ~/.bashrc
+    expected_go_path='export PATH=$PATH:'${GOPATH}'/bin'
+    if ! grep -q "$expected_go_path" ~/.bashrc; then
+        export PATH=$PATH:${GOPATH}/bin
+        echo "$expected_go_path" >> ~/.bashrc
     fi
-    export GOPATH=$HOME/projects/go
-    export PATH=$PATH:$HOME/projects/go/bin
+    export PATH=$PATH:$GOPATH/bin
     CJDCMD_REPO2=$(echo "$CJDCMD_REPO" | sed 's|https://||g')
     go get $CJDCMD_REPO2
-    if [ ! -f $HOME/projects/go/bin/cjdcmd ]; then
+    if [ ! -f $GOPATH/bin/cjdcmd ]; then
         echo $'cjdcmd was not compiled. Check your golang installation'
         exit 7439
     fi
-    cp $HOME/projects/go/bin/cjdcmd /usr/bin
+    cp $GOPATH/bin/cjdcmd /usr/bin
 
     # initialise from the cjdns config
     /usr/bin/cjdcmd cjdnsadmin -file /etc/cjdns/cjdroute.conf