Instead of raising an exception and therefore hiding all results of the engine.
It make sense to remove that requirement in order to allow the implementation of
search engines that do not always have a description. In fact some search
engines that in 99% of the case have a description like Brave Search or Mojeek
crash completely if they for some reason included a result with no description.
To test this patch try Mojeek:
!mjk xyz
before and after the patch.
Suggested-by: 0xhtml in https://github.com/searx/searx/discussions/2933
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
Suggestions should be added too.
suggestion_xpath: //div[@class="text-gray h6"]/a
You can try it with:
!brave recurzuoin
Suggested-by: @allendema in https://github.com/searx/searx/issues/2857#issuecomment-904837023
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
Pylint 2.10 fixed [1]:
Fixed bug with cell-var-from-loop checker: it no longer has false negatives
when both unused-variable and used-before-assignment are disabled.
[1] https://pylint.pycqa.org/en/latest/whatsnew/2.10.html
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
Pylint 2.10 added new default checks [1]:
use-list-literal
Emitted when list() is called with no arguments instead of using []
use-dict-literal
Emitted when dict() is called with no arguments instead of using {}
[1] https://pylint.pycqa.org/en/latest/whatsnew/2.10.html
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
- Add ``# lint: pylint`` header to pylint this python file.
- Fix issues reported by pylint.
- Add source code documentation of modul searx.locales
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
In commit 4d3f2f48d common used languages has been droped. By reducing the
number of `min_engines_per_lang` from 15 to 13 we get theses languages back.
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
This commit remove the need to update the brand for GIT_URL and GIT_BRANCH:
there are read from the git repository.
It is possible to call python -m searx.version freeze to freeze the current version.
Useful when the code is installed outside git (distro package, docker, etc...)
Deny formats has been implemented in 6ed4616d.
To harden SearXNG instances by default, other formats than HTML should be
denied. Most of JSON, RSS and CSV requests are bots [1]::
Bots are the only users of this feature on a public instance, and they abuse
it too much that the engines rate limit pretty quickly the IP address of the
instance.
[1] https://github.com/searxng/searxng/issues/95
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
Do not merge this patch in master branch of SearXNG! This branch exists only
for testing the feature branch fix-searx.sh @return42.
This patch changes the buildenv to::
GIT_URL='https://github.com/return42/searxng'
GIT_BRANCH='fix-searx.sh'
SEARX_PORT='7777'
SEARX_BIND_ADDRESS='127.0.0.12'
To test installation procedure, clone feature branch (fix-searx.sh)::
$ cd ~/Downloads
$ git clone --branch fix-searx.sh https://github.com/return42/searxng searxng
$ cd searxng
$ ./utils/searx.sh install all
...
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
Not all settings from the 'brand:' section of the YAML files are needed in the
shell scripts. This patch reduce the variables in ./utils/brand.env to what is
needed. The following ('brand:' settings) can be removed from this file:
- ISSUE_URL
- DOCS_URL
- PUBLIC_INSTANCES
- WIKI_URL
Tasks running outside of an *installed instance*, need the following settings
from the YAML configuration:
- GIT_URL <--> brand.git_url
- GIT_BRANCH <--> brand.git_branch
- SEARX_URL <--> server.base_url (aka PUBLIC_URL)
- SEARX_PORT <--> server.port
- SEARX_BIND_ADDRESS <--> server.bind_address
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
modified docs/admin/engines/settings.rst
- Fix documentation and add section 'brand'.
- Add remarks about **buildenv** variables.
- Add remarks about settings from environment variables $SEARX_DEBUG,
$SEARX_PORT, $SEARX_BIND_ADDRESS and $SEARX_SECRET
modified docs/admin/installation-searx.rst & docs/build-templates/searx.rst
Fix template location /templates/etc/searx/settings.yml
modified docs/dev/makefile.rst
Add description of the 'make buildenv' target and describe
- we have all SearXNG setups are centralized in the settings.yml file
- why some tasks need a utils/brand.env (aka instance's buildenv)
modified manage
Settings file from repository's working tree are used by default and
ask user if a /etc/searx/settings.yml file exists.
modified searx/settings.yml
Add comments about when it is needed to run 'make buildenv'
modified searx/settings_defaults.py
Default for server:port is taken from enviroment variable SEARX_PORT.
modified utils/build_env.py
- Some defaults in the settings.yml are taken from the environment,
e.g. SEARX_BIND_ADDRESS (searx.settings_defaults.SHEMA). When the
'brand.env' file is created these enviroment variables should be
unset first.
- The CONTACT_URL enviroment is not needed in the utils/brand.env
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
The usages of the searx.brand namespace has been removed, the searx.brand
namespace is now longer needed.
The searx.brand namespace was an interim solution which has been added in commit
9e53470b4, see commit message there ...
This patch is a first 'proof of concept'. Later we can decide to remove the
brand namespace entirely or not.
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
In the templates and the /config (JSON) the usage of the 'brand.*' name
space is replaced by 'searx.get_setting' function.
- new_issue_url --> get_setting('brand.new_issue_url')
- brand.GIT_URL --> get_setting('brand.git_url')
- brand.PUBLIC_INSTANCES --> get_setting('brand.public_instances')
- brand.DOCS_URL --> get_setting('brand.docs_url')
- brand.ISSUE_URL --> get_setting('brand.issue_url')
- brand.CONTACT_URL --> get_setting('general.contact_url', '')
The macro 'new_issue' from searx/templates/*/messages/no_results.html
is now imported with context::
{% from '__common__/new_issue.html' import new_issue with context %}
To get *public instances URL* from context's 'get_setting()' function::
get_setting('brand.public_instances','')
Macro's prototype does no longer need the 'new_issue_url' argument and has been
changed to::
macro new_issue(engine_name, engine_reliability)
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
Added function searx.get_setting(name, default=_unset):
Returns the value to which ``name`` point. If there is no such name in the
settings and the ``default`` is unset, a KeyError exception is raised.
In all the python processes ..
- make docs
- make buildenv
- make install (setup.py)
the usage of the 'brand.*' name space is replaced by 'searx.get_setting'
function.
- brand.SEARX_URL --> get_setting('server.base_url')
- brand.GIT_URL --> get_setting('brand.git_url')
- brand.GIT_BRANCH' --> get_setting('server.base_url')
- brand.ISSUE_URL --> get_setting('brand.issue_url')
- brand.DOCS_URL --> get_setting('brand.docs_url')
- brand.PUBLIC_INSTANCES --> get_setting('brand.public_instances')
- brand.CONTACT_URL --> get_setting('general.contact_url', '')
- brand.WIKI_URL --> get_setting('brand.wiki_url')
- brand.TWITTER_URL --> get_setting('brand.twitter_url', '')
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
Qwant is a fast and reliable search engine and AFAIK there is no CAPTCHA. Let
us enable Qwant engines by default.
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
The implementation uses the Qwant API (https://api.qwant.com/v3). The API is
undocumented but can be reverse engineered by reading the network log of
https://www.qwant.com/ queries.
This implementation is used by different qwant engines in the settings.yml::
- name: qwant
categories: general
...
- name: qwant news
categories: news
...
- name: qwant images
categories: images
...
- name: qwant videos
categories: videos
...
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
The engine was added in commit a4b07460 but now it shows new issues [1].
In the 90'th of the last century, dogpile had its own WEB index, but nowadays it
is a meta-search engine [2]
Powered by technology, Dogpile returns all the best results from leading
search engines including Google and Yahoo!
Using dogpile as an engine in SearXNG needs more investigation, a XPath solution
like we have is not enough. It is questionable whether it still makes sense to
investigate more into a meta-search engine with a ReCAPTCHA in front.
With this patch the dogpile engine is removed
[1] https://github.com/searxng/searxng/issues/202
[2] https://www.dogpile.com/support/aboutus
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
Engine just for Podcasts. An API which returns Podcasts and their Info like:
website, author etc.
Upstream query example: https://gpodder.net/search.json?q=linux
Added synonyme.woxikon.de using the xpath engine. Adds a site which returns
word synonyms although just in German.
Depending on the query not all synonyms are shown because of not the best xpath
selection. But should do the job just fine.
Upstream example query: https://synonyme.woxikon.de/synonyme/test.php
BTW add about section to the YAML configuration
It now shows descriptions with their correct URLs when there are videos in the
search results, pulling content_xpath from snippet-description instead of
snippet-content.
Suggested-by: @eagle-dogtooth https://github.com/searx/searx/issues/2857#issuecomment-869119968
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
Upgrade from pylint v2.8.3 to 2.9.3 raise some new issues::
searx/search/checker/__main__.py:37:26: R1732: Consider using 'with' for resource-allocating operations (consider-using-with)
searx/search/checker/__main__.py:38:26: R1732: Consider using 'with' for resource-allocating operations (consider-using-with)
searx/search/processors/__init__.py:20:0: R0402: Use 'from searx import engines' instead (consider-using-from-import)
searx/preferences.py:182:19: C0207: Use data.split('-', maxsplit=1)[0] instead (use-maxsplit-arg)
searx/preferences.py:506:15: R1733: Unnecessary dictionary index lookup, use 'user_setting' instead (unnecessary-dict-index-lookup)
searx/webapp.py:436:0: C0206: Consider iterating with .items() (consider-using-dict-items)
searx/webapp.py:950:4: C0206: Consider iterating with .items() (consider-using-dict-items)
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
To compress saved preferences in the URL was introduced in 5f758b2d3 and
slightly fixed in 8f4401462. But the main fail was not fixed; The decompress
function returns a binary string and this binary should first be decoded to a
string before it is passed to urllib.parse_qs.
BTW: revert the hot-fix from 5973491
Related-to: https://github.com/searxng/searxng/issues/166
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
- move jshint option from gruntfile to .jshintrc
- remove trailing-whitespace from gruntfile and
- add jshint esversion: 6
- .dir-locals.el add locals for js-mode to use JSHint from the simple theme
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
This patch disables role 'no-descending-specificity'. IMO it is better to have
this rule active (see below [1]), but it is hard to rewrite the less files to
pass this rule, so for the first I chose to disable this rule.
---
Source order is important in CSS, and when two selectors have the same
specificity, the one that occurs last will take priority. However, the situation
is different when one of the selectors has a higher specificity. In that case,
source order does not matter: the selector with higher specificity will win out
even if it comes first.
The clashes of these two mechanisms for prioritization, source order and
specificity, can cause some confusion when reading stylesheets. If a selector
with higher specificity comes before the selector it overrides, we have to think
harder to understand it, because it violates the source order
expectation. Stylesheets are most legible when overriding selectors always come
after the selectors they override. That way both mechanisms, source order and
specificity, work together nicely.
This rule enforces that practice as best it can, reporting fewer errors than it
should. It cannot catch every actual overriding selector, but it can catch
certain common mistakes.
[1] https://stylelint.io/user-guide/rules/list/no-descending-specificity/
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
This fix was autogenerated by::
npx stylelint -f unix --fix 'searx/static/themes/simple/src/less/**/*.less'
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
In the EU there exists a "General Data Protection Regulation" [1] aka GDPR (BTW:
very user friendly!) which requires consent to tracking. To get the consent
from the user, google-news requests are redirected to confirm and get a CONSENT
Cookie from https://consent.google.de/s?continue=...
This patch adds a CONSENT Cookie to the google-news request to avoid
redirection.
The behavior of the CONTENTS cookies over all google engines seems similar but
the pattern is not yet fully clear to me, here are some random samples from my
analysis ..
Using common google search from different domains::
google.com: CONSENT=YES+cb.{{date}}-14-p0.de+FX+816
google.de: CONSENT=YES+cb.{{date}}-14-p0.de+FX+333
google.fr: CONSENT=YES+srp.gws-{{date}}-0-RC2.fr+FX+826
When searching about videos (google-videos)::
google.es: CONSENT=YES+srp.gws-{{date}}-0-RC2.es+FX+076
google.de: CONSENT=YES+srp.gws-{{date}}-0-RC2.de+FX+171
Google news has only one domain for all languages::
news.google.com: CONSENT=YES+cb.{{date}}-14-p0.de+FX+816
Using google-scholar search from different domains::
scholar.google.de: CONSENT=YES+cb.{{date}}-14-p0.de+FX+333
scholar.google.fr: does not use such a cookie / did not ask the user
scholar.google.es: does not use such a cookie / did not ask the user
Interim summary:
Pattern is unclear and I won't apply the CONSENT cookie to all google engines.
More experience is need before we generalize the CONSENT cookies over all
google engines.
Related:
- e9a6ab401 [fix] youtube - send CONSENT Cookie to not be redirected
- https://github.com/benbusby/whoogle-search/issues/311
- https://github.com/benbusby/whoogle-search/issues/243
[1] https://en.wikipedia.org/wiki/General_Data_Protection_Regulation
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
Since we added
- 1c67b6aec [enh] google engine: supports "default language"
there is a KeyError: 'hl in request,error pattern::
ERROR:searx.searx.search.processor.online:engine google news : exception : 'hl'
Traceback (most recent call last):
File "searx/search/processors/online.py", line 144, in search
search_results = self._search_basic(query, params)
File "searx/search/processors/online.py", line 118, in _search_basic
self.engine.request(query, params)
File "searx/engines/google_news.py", line 97, in request
if lang_info['hl'] == 'en':
KeyError: 'hl'
Closes: https://github.com/searxng/searxng/issues/154
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
Before this commit, there are 3 node_modules directory:
* one in .
* two others in ./searx/statics/themes/*
This is no desirable:
* it declares the npm depdenencies in the shell script.
* dependabot can't updates theses dependencies.
* this is a not standard way to build a package (two different locations for the dependencies).
With this commit and the PR #150 there is one unique node_modules directory per theme.
This file is generated by webfont.
* It is now generated as searx/static/themes/simple/ion.less
* It is generated before the .less compilation.
* .gitignore includes this file
Add two new package depedencies: fontforge ttfautohint
See utils/searx.sh
the build of the themes updates:
* js/leaflet.js ( was leaflet/leaflet.js )
* css/leaflet.css ( was leaflet/leaflet.css )
* css/images ( was leaflet/images )
Same behaviour behaviour than Whoogle [1]. Only the google engine with the
"Default language" choice "(all)"" is changed by this patch.
When searching for a locate place, the result are in the expect language,
without missing results [2]:
> When a language is not specified, the language interpretation is left up to
> Google to decide how the search results should be delivered.
The query parameters are copied from Whoogle. With the ``all`` language:
- add parameter ``source=lnt``
- don't use parameter ``lr``
- don't add a ``Accept-Language`` HTTP header.
The new signature of function ``get_lang_info()`` is:
lang_info = get_lang_info(params, lang_list, custom_aliases, supported_any_language)
Argument ``supported_any_language`` is True for google.py and False for the other
google engines. With this patch the function now returns:
- query parameters: ``lang_info['params']``
- HTTP headers: ``lang_info['headers']``
- and as before this patch:
- ``lang_info['subdomain']``
- ``lang_info['country']``
- ``lang_info['language']``
[1] https://github.com/benbusby/whoogle-search
[2] https://github.com/benbusby/whoogle-search/releases/tag/v0.5.4
render automatically adds these variables to the template context:
* advanced_search
* all_categories
* categories
before render was checking if the variable was already set
but it is actually never set by the callers
Based on commit:
- a89b823f [mod] remove overpass API call
this patch is generated by::
make themes.all
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
Loading an engine should not exit the application (*). Instead
of exit, return None.
(*) RuntimeError still exit the application: syntax error, etc...
BTW: add documentation and normalize indentation (no functional change)
Suggested-by: @dalf https://github.com/searxng/searxng/pull/116#issuecomment-851865627
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
Slightly modified merge of commit [1cb1d3ac] from searx [PR 2543]:
This adds Docker Hub .. as a search engine .. the engine's favicon was
downloaded from the Docker Hub website with wget and converted to a PNG
with ImageMagick .. It supports the parsing of URLs, titles, content,
published dates, and thumbnails of Docker images.
[1cb1d3ac] https://github.com/searx/searx/pull/2543/commits/1cb1d3ac
[PR 2543] https://github.com/searx/searx/pull/2543
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
Access to formats can be denied by settings configuration::
search:
formats: [html, csv, json, rss]
Closes: https://github.com/searxng/searxng/issues/95
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
To test & demonstrate this implementation download:
https://liste.mediathekview.de/filmliste-v2.db.bz2
and unpack into searx/data/filmliste-v2.db, in your settings.yml define a sqlite
engine named "demo"::
- name : demo
engine : sqlite
shortcut: demo
categories: general
result_template: default.html
database : searx/data/filmliste-v2.db
query_str : >-
SELECT title || ' (' || time(duration, 'unixepoch') || ')' AS title,
COALESCE( NULLIF(url_video_hd,''), NULLIF(url_video_sd,''), url_video) AS url,
description AS content
FROM film
WHERE title LIKE :wildcard OR description LIKE :wildcard
ORDER BY duration DESC
disabled : False
Query to test: "!demo concert"
This is a rewrite of the implementation from commit [1]
[1] searx/searx@8e90a21
Suggested-by: @virtadpt searx/searx#2808
No functional change, just some linting.
- fix messages from pylint (see below)
- log where general Exceptions are catched (broad-except)
- normalized various indentation
- To avoid clashes with common names, add prefix 'route_' to all @app.route
decorated functions.
Fixed messages::
searx/webapp.py:744:0: C0301: Line too long (146/120) (line-too-long)
searx/webapp.py:756:0: C0301: Line too long (132/120) (line-too-long)
searx/webapp.py:730:9: W0511: TODO, check if timezone is calculated right (fixme)
searx/webapp.py:1:0: C0114: Missing module docstring (missing-module-docstring)
searx/webapp.py:126:8: I1101: Module 'setproctitle' has no 'setthreadtitle' member, but source is unavailable. Consider adding this module to extension-pkg-allow-list if you want to perform analysis based on run-time introspection of living objects. (c-extension-no-member)
searx/webapp.py:126:36: W0212: Access to a protected member _name of a client class (protected-access)
searx/webapp.py:131:4: R1722: Consider using sys.exit() (consider-using-sys-exit)
searx/webapp.py:141:4: R1722: Consider using sys.exit() (consider-using-sys-exit)
searx/webapp.py:255:38: W0621: Redefining name 'request' from outer scope (line 32) (redefined-outer-name)
searx/webapp.py:307:4: W0702: No exception type(s) specified (bare-except)
searx/webapp.py:374:24: W0621: Redefining name 'theme' from outer scope (line 155) (redefined-outer-name)
searx/webapp.py:420:8: R1705: Unnecessary "else" after "return" (no-else-return)
searx/webapp.py:544:4: W0621: Redefining name 'preferences' from outer scope (line 917) (redefined-outer-name)
searx/webapp.py:551:4: W0702: No exception type(s) specified (bare-except)
searx/webapp.py:566:15: W0703: Catching too general exception Exception (broad-except)
searx/webapp.py:613:4: R1705: Unnecessary "elif" after "return" (no-else-return)
searx/webapp.py:690:8: W0621: Redefining name 'search' from outer scope (line 661) (redefined-outer-name)
searx/webapp.py:661:0: R0914: Too many local variables (22/20) (too-many-locals)
searx/webapp.py:674:8: R1705: Unnecessary "else" after "return" (no-else-return)
searx/webapp.py:697:11: W0703: Catching too general exception Exception (broad-except)
searx/webapp.py:748:4: R1705: Unnecessary "elif" after "return" (no-else-return)
searx/webapp.py:661:0: R0911: Too many return statements (9/6) (too-many-return-statements)
searx/webapp.py:661:0: R0912: Too many branches (29/12) (too-many-branches)
searx/webapp.py:661:0: R0915: Too many statements (74/50) (too-many-statements)
searx/webapp.py:931:4: W0621: Redefining name 'image_proxy' from outer scope (line 1072) (redefined-outer-name)
searx/webapp.py:946:4: W0621: Redefining name 'stats' from outer scope (line 1132) (redefined-outer-name)
searx/webapp.py:917:0: R0914: Too many local variables (34/20) (too-many-locals)
searx/webapp.py:917:0: R0912: Too many branches (19/12) (too-many-branches)
searx/webapp.py:917:0: R0915: Too many statements (65/50) (too-many-statements)
searx/webapp.py:1063:44: W0621: Redefining name 'preferences' from outer scope (line 917) (redefined-outer-name)
searx/webapp.py:1072:0: R0911: Too many return statements (9/6) (too-many-return-statements)
searx/webapp.py:1151:4: C0103: Variable name "SORT_PARAMETERS" doesn't conform to '(([a-z][a-zA-Z0-9_]{2,30})|(_[a-z0-9_]*)|([a-z]))$' pattern (invalid-name)
searx/webapp.py:1297:0: R1721: Unnecessary use of a comprehension (unnecessary-comprehension)
searx/webapp.py:1303:0: C0103: Argument name "e" doesn't conform to '(([a-z][a-zA-Z0-9_]{2,30})|(_[a-z0-9_]*))$' pattern (invalid-name)
searx/webapp.py:1303:19: W0613: Unused argument 'e' (unused-argument)
searx/webapp.py:1338:23: W0621: Redefining name 'app' from outer scope (line 162) (redefined-outer-name)
searx/webapp.py:1318:0: R0903: Too few public methods (1/2) (too-few-public-methods)
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
pylint message: wrong-import-order
Respect PEP8 import order (standard imports first, then third-party libraries,
then local imports).
pylint message: wrong-import-position
Do not mix code & imports
BTW:
- only one import per line
- replace licence text by SPDX tag
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
Remove extension of the sys.path (aka PYTHONPATH). Running instance directly
from repository's folder is a relict from the early beginning in
2014 (fd651083f) and is no longer supported.
Since commit dd46629 was merged the command line 'searx-run' exists and should
be used.
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
- Use result 'alt_description' as title, if not given use
default title 'unknown'.
- Use result 'description' from unsplash as 'content'
Fix error::
DEBUG:searx:result: invalid title: {..., 'title': None, 'content': '', 'engine': 'unsplash'}
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
No functional change!
- fix messages from pylint
- add ``global THREADLOCAL``
- normalized various indentation
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
Remove 'template' from result. Engine genius should
not use the video template. BTW: fix indentations
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
- pylint searx/engines/xpath.py
- fix indentation of some long lines
- add logging
- add doc-strings
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
- init stat values by None
- drop round_or_none
- don't try to get percentage if base is 'None'
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
Add a new environment variable SEARX_DISABLE_ETC_SETTINGS
to disable loading of /etc/searx/settings.yml
unit tests:
* set SEARX_DISABLE_ETC_SETTINGS to 1
* remove SEARX_SETTINGS_PATH if it exists
