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<h3>
Simon Jakobi pushed to branch wip/sjakobi/deprecate-option-v2
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
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<h4>
Commits:
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<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/13bd5601af8228fc95db7f01b006fb7742e95254">13bd5601</a></strong>
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<span>by Simon Jakobi</span>
<i>at 2020-06-18T16:55:10+02:00</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Deprecate Data.Semigroup.Option

Libraries email: https://mail.haskell.org/pipermail/libraries/2018-April/028724.html

GHC issue: https://gitlab.haskell.org/ghc/ghc/issues/15028

Corresponding PR for deepseq: https://github.com/haskell/deepseq/pull/55

Bumps the deepseq submodule.
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<h4>3 changed files:</h4>
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<a href="#c4f017fa9974a726de9e40cc73a72967c443cef4">
libraries/base/Data/Semigroup.hs
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<a href="#392e9dfd3417e267d708c5ab16536f2994d43745">
libraries/base/changelog.md
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<a href="#1f9e349c6faf0ce4022d1187385f4e265086172b">
libraries/deepseq
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<h4>Changes:</h4>
<li id="c4f017fa9974a726de9e40cc73a72967c443cef4">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/13bd5601af8228fc95db7f01b006fb7742e95254#c4f017fa9974a726de9e40cc73a72967c443cef4"><strong>libraries/base/Data/Semigroup.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -514,6 +514,8 @@ mtimesDefault n x</td>
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<pre style="margin: 0;"> <span id="LC514" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">==</span> <span class="mi" style="color: #099;">0</span>    <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mempty</span></span>
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<pre style="margin: 0;"> <span id="LC515" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">unwrapMonoid</span> <span class="p">(</span><span class="n" style="color: #333;">stimes</span> <span class="n" style="color: #333;">n</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">WrapMonoid</span> <span class="n" style="color: #333;">x</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC517" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# DEPRECATED Option, option "will be removed in GHC 8.14; use 'Maybe' instead." #-}</span></span>
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<pre style="margin: 0;"> <span id="LC519" class="line" lang="haskell"><span class="cd">-- | 'Option' is effectively 'Maybe' with a better instance of</span></span>
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<pre style="margin: 0;"> <span id="LC520" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- 'Monoid', built off of an underlying 'Semigroup' instead of an</span></span>
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<pre style="margin: 0;"> <span id="LC521" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- underlying 'Monoid'.</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -523,8 +525,7 @@ mtimesDefault n x</td>
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<pre style="margin: 0;"> <span id="LC525" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;"> <span id="LC526" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- In GHC 8.4 and higher, the 'Monoid' instance for 'Maybe' has been</span></span>
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<pre style="margin: 0;"> <span id="LC527" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- corrected to lift a 'Semigroup' instance instead of a 'Monoid'</span></span>
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<pre style="margin: 0;">-<span id="LC526" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- instance. Consequently, this type is no longer useful. It will be</span></span>
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<pre style="margin: 0;">-<span id="LC527" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- marked deprecated in GHC 8.8 and removed in GHC 8.10.</span></span>
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<pre style="margin: 0;">+<span id="LC528" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- instance. Consequently, this type is no longer useful.</span></span>
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<pre style="margin: 0;"> <span id="LC529" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">newtype</span> <span class="kt" style="color: #458; font-weight: 600;">Option</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Option</span> <span class="p">{</span> <span class="n" style="color: #333;">getOption</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">a</span> <span class="p">}</span></span>
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<td class="diff-line-num new_line" data-linenumber="530" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC530" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">deriving</span> <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">Eq</span>       <span class="c1" style="color: #998; font-style: italic;">-- ^ @since 4.9.0.0</span></span>
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<td class="diff-line-num old_line" data-linenumber="530" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC531" class="line" lang="haskell">           <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Ord</span>      <span class="c1" style="color: #998; font-style: italic;">-- ^ @since 4.9.0.0</span></span>
</pre>
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<li id="392e9dfd3417e267d708c5ab16536f2994d43745">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/13bd5601af8228fc95db7f01b006fb7742e95254#392e9dfd3417e267d708c5ab16536f2994d43745"><strong>libraries/base/changelog.md</strong></a>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -14,6 +14,9 @@</td>
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<td class="diff-line-num old_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<td class="diff-line-num new_line" data-linenumber="14" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC14" class="line" lang="markdown"><span class="p">  *</span> The planned deprecation of <span class="sb" style="color: #d14;">`Data.Monoid.First`</span> and <span class="sb" style="color: #d14;">`Data.Monoid.Last`</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<td class="diff-line-num new_line" data-linenumber="15" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC15" class="line" lang="markdown">    is scrapped due to difficulties with the suggested migration path.</span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="16" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<td class="diff-line-num new_line" data-linenumber="16" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC16" class="line" lang="markdown"></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC17" class="line" lang="markdown"><span class="p">  *</span> <span class="sb" style="color: #d14;">`Data.Semigroup.Option`</span> and the accompanying <span class="sb" style="color: #d14;">`option`</span> function are</span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC18" class="line" lang="markdown">    deprecated and scheduled for removal in 4.16.</span>
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<pre style="margin: 0;">+<span id="LC19" class="line" lang="markdown"></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="17" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<td class="diff-line-num new_line" data-linenumber="20" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC20" class="line" lang="markdown"><span class="p">  *</span> Add <span class="sb" style="color: #d14;">`Generic`</span> instances to <span class="sb" style="color: #d14;">`Fingerprint`</span>, <span class="sb" style="color: #d14;">`GiveGCStats`</span>, <span class="sb" style="color: #d14;">`GCFlags`</span>,</span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="18" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<td class="diff-line-num new_line" data-linenumber="21" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC21" class="line" lang="markdown">    <span class="sb" style="color: #d14;">`ConcFlags`</span>, <span class="sb" style="color: #d14;">`DebugFlags`</span>, <span class="sb" style="color: #d14;">`CCFlags`</span>, <span class="sb" style="color: #d14;">`DoHeapProfile`</span>, <span class="sb" style="color: #d14;">`ProfFlags`</span>,</span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="19" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<td class="diff-line-num new_line" data-linenumber="22" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC22" class="line" lang="markdown">    <span class="sb" style="color: #d14;">`DoTrace`</span>, <span class="sb" style="color: #d14;">`TraceFlags`</span>, <span class="sb" style="color: #d14;">`TickyFlags`</span>, <span class="sb" style="color: #d14;">`ParFlags`</span>, <span class="sb" style="color: #d14;">`RTSFlags`</span>, <span class="sb" style="color: #d14;">`RTSStats`</span>,</span>
</pre>
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<li id="1f9e349c6faf0ce4022d1187385f4e265086172b">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/13bd5601af8228fc95db7f01b006fb7742e95254#1f9e349c6faf0ce4022d1187385f4e265086172b"><strong>libraries/deepseq</strong></a>
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1
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<td class="diff-line-num new_line old" data-linenumber="1" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-Subproject commit <span class="idiff left right">da0eda33f540786b6823c6f542ab59cf9d1b71d9</span></pre>
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<td class="diff-line-num new old_line" data-linenumber="2" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<pre style="margin: 0;">+Subproject commit <span class="idiff left right">0ade68f6f54d621132e9bb5f9e3c5fe01f45091f</span></pre>
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