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<div class="moz-cite-prefix">On 15/08/2017 01:58, Kevin Jones wrote:<br>
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<blockquote type="cite"
cite="mid:CACEeMhA8WMjd5s3bSXcoWtE2RsmC+c_JETim016QcLtFKSML4A@mail.gmail.com">
<div class="gmail_extra">No. If you can get a link to the addon,
it will install it. And it will run as long as
`extensions.legacy.enabled` is true.<br>
<br>
Like Mathieu replied on this thread (In order to get the install
button active):<br>
<br>
"One workaround for this is to set
"extensions.checkCompatibility<wbr>.nightly" to false in
<a class="moz-txt-link-freetext" href="about:config">about:config</a>. This will force nightly to ask AMO to ignore
compatibility information when updating extensions. Do this at
your own risk though, ignoring compatibility usually leads to
broken add-ons."<br>
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<br>
My reply about that pref was only valid in the context of updates of
already installed add-ons. When using the website, AMO can't access
any of those prefs and doesn't let you install incompatible add-ons
- that includes legacy ones in Firefox 57.<br>
<br>
If you want to *install* and not just update legacy extensions, you
have to go through the Add-on Manager search functionality (Tools
-> Add-ons -> Extensions -> Search all add-ons), which uses
AMO APIs but presents the results within Firefox itself, honoring
those prefs. Note that the special API used by the add-on manager
has several limitations, so search results might differ from what
you see on the website (in particular, it won't show you add-ons
marked as experimental by their author(s)). Again, do this at your
own risk.<br>
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