Re: By default nmap requires an internet connection

On Tue, 2025-05-13 at 18:13 -0500, Bruce Dubbs wrote:
> On 5/13/25 5:59 PM, Joe Locash ([email protected] via blfs-dev Mailing List) wrote:
> > 
> > On 5/13/25 6:53 PM, Bruce Dubbs ([email protected] via blfs-dev Mailing List) wrote:
> > > On 5/13/25 5:34 PM, Joe Locash ([email protected] via blfs-dev Mailing List) wrote:
> > > > 
> > > > On 5/13/25 5:51 PM, Bruce Dubbs ([email protected] via blfs-dev Mailing List) 
> > > > wrote:
> > > > > I looked at my build log and didn't see where it is using an internet connection. 
> > > > > Can you show where that is happening? 
> > > > 
> > > > 
> > > > /usr/bin/python3 -m build zenmap/
> > > > * Creating isolated environment: venv+pip...
> > > > * Installing packages in isolated environment:
> > > >    - setuptools
> > > >  > /usr/bin/python3 -m pip --python /tmp/build-env-fr8do3me/bin/python install
> > > >    --use-pep517 --no-warn-script-location --no-compile -r /tmp/build-reqs-
> > > >    uok0756y.txt
> > > > < WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None,
> > > >    status=None)) after connection broken by
> > > > 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object
> > > >    at 0x7f83a5b830e0>: Failed to establish a new connection: [Errno -3]
> > > >    Temporary failure in name resolution')': /simple/setuptools/
> > > > 
> > > > ....
> > > > 
> > > > < ERROR: Could not find a version that satisfies the requirement setuptools
> > > >    (from versions: none)
> > > > < ERROR: No matching distribution found for setuptools
> > > 
> > > Interesting.  I have:
> > > 
> > > /usr/bin/python3 -m build zenmap/
> > > /usr/bin/python3 -m build ndiff/
> > > * Creating isolated environment: venv+pip...
> > > * Installing packages in isolated environment:
> > > * Creating isolated environment: venv+pip...
> > > * Installing packages in isolated environment:
> > > Compiling libnsock
> > > ...
> > > 
> > > We are installing setuptools in LFS.  Did you not have that installed?

It cannot use the setuptools in LFS because they are not creating venv
with --system-site-packages (like what we are doing for various Python
modules).  If you purge ~/.cache/pip and disconnect the network (or use
unshare -r -n to create an environment with no network) you can
reproduce the issue.

-- 
Xi Ruoyao <[email protected]>
School of Aerospace Science and Technology, Xidian University

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