Reference page:
    http://gihyo.jp/admin/serial/01/ubuntu-recipe/0152

$ pwd /home/username
$ sudo apt-get install build-essential devscripts
$ dget -u https://ftp.yz.yamagata-u.ac.jp/pub/linux/ubuntu/archives/pool/universe/n/nim/nim_0.19.4-1.dsc
$ sudo apt-get build-dep nim
$ sudo apt install help2man
$ cd nim -0.19.4
$ time dpkg-buildpackage -r -uc -b -d
...
...
dpkg-deb: building package 'nim' in '../nim_0.19.4-1_i386.deb'.
	install -d debian/.debhelper/scratch-space/build-nim
	dpkg-deb --build debian/.debhelper/nim/dbgsym-root debian/.debhelper/scratch-space/build-nim
dpkg-deb: building package 'nim-dbgsym' in 'debian/.debhelper/scratch-space/build-nim/nim-dbgsym_0.19.4-1_i386.deb'.
	Renaming nim-dbgsym_0.19.4-1_i386.deb to nim-dbgsym_0.19.4-1_i386.ddeb
	mv debian/.debhelper/scratch-space/build-nim/nim-dbgsym_0.19.4-1_i386.deb ../nim-dbgsym_0.19.4-1_i386.ddeb
	dpkg-deb --build debian/nim-doc ..
dpkg-deb: building package 'nim-doc' in '../nim-doc_0.19.4-1_all.deb'.
 dpkg-genbuildinfo --build=binary
 dpkg-genchanges --build=binary >../nim_0.19.4-1_i386.changes
dpkg-genchanges: info: binary-only upload (no source code included)
 dpkg-source --after-build nim-0.19.4
dpkg-source: warning: Testsuite field contains value autopkgtest, but no tests control file debian/tests/control
dpkg-buildpackage: info: binary-only upload (no source included)

real	29m8.233s
user	22m43.114s
sys	2m12.617s

$ cd..
$ cp nim_0.19.4-1_i386.deb nim_0.19.4-1_i386_bionic_18.04.deb
$ sudo apt install ./nim_0.19.4-1_i386_bionic_18.04.deb
$ nim -v
Nim Compiler Version 0.19.4 [Linux: i386]
Compiled at 2019-03-05
Copyright (c) 2006-2018 by Andreas Rumpf

active boot switches: -d:release