It is now possible to start Linux Development on an android device:
The above article shows how to install enough onto your phone to allow basic development.
Here is some of the history from my first session
1 apt update && apt upgrade
2 apt install coreutils
8 which awk
9 which sed
10 which grep
11 which curl
# not found so installed via
12 pkg install curl
13 curl
19 apt install vim
21 apt install nodejs
22 which node
24 node -v
25 history
Given that I now have node, vim, curl, grep, awk and sed this looks to be a useful base platform.
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