Re: By default nmap requires an internet connection

On 5/24/25 3:52 AM, Rainer Fiebig ([email protected] via blfs-dev Mailing List) wrote:
> Am 24.05.25 um 07:59 schrieb Bruce Dubbs ([email protected] via
> blfs-dev Mailing List):
>> On 5/24/25 12:04 AM, Xi Ruoyao ([email protected] via blfs-dev Mailing
>> List) wrote:
>>> On Sat, 2025-05-24 at 12:15 +0800, Xi Ruoyao wrote:
>>>> On Fri, 2025-05-23 at 15:21 -0400, Joe Locash wrote:
>>>>> On 5/14/25 12:21 AM, Xi Ruoyao ([email protected] via blfs-dev Mailing
>>>>> List) wrote:
>>>>>> On Wed, 2025-05-14 at 12:07 +0800, Xi Ruoyao wrote:
>>>>>>> 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.
>>>>>> Fixed with
>>>>>> https://lists.linuxfromscratch.org/sympa/arc/blfs-book/2025-05/msg00293.html.
>>>>>>
>>>>>>
>>>>>>
>>>>> sed 's/-m pip install/& --no-build-isolation/' -i Makefile.in
>>>>>
>>>>> is also needed for the install side of it.
>>>>
>>>> This is just strange.  We don't have --no-build-isolation for pip3
>>>> install of anything in
>>>> https://www.linuxfromscratch.org/blfs/view/systemd/general/python-modules.html.
>>>>
>>>>
>>>> Thus I guess adding --no-build-isolation here is just covering up the
>>>> real issue.  I'll investigate later.
>>>
>>> The real issue is "make install" rebuilds the python modules instead of
>>> installing the wheels produced by "make."  This is just stupid IMO.
>>>
>>> I'll do something like
>>>
>>> sed -r '/pip install/s#(ZENMAP|NDIFF)DIR\)/#&dist/*.whl#' \
>>>       -i Makefile.in
>>>
>>> to correct it.
>>
>> I like using the -r in the sed.  Good example.
> I suggest to use "-E" instead.  "-E" is easier to associate with
> "extended" than "-r" and thus easier to remember.  It's also used with
> the same meaning in grep where "-r" means "recursive".  Or use the long
> form.
> 
> Diversity is all very fine but I plead for consistency throughout the
> books whenever possible.  Building LFS/BLFS is hard enough.

Well, we use -r in 6 packages and -E in 2 packages now.  Those options mean the same 
thing in sed.  I really don't see a problem with using both in the book.

   -- Bruce

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