linux: Implement local time zone support (#14610)

I decided to remove the GPUI APIs since `chrono` already provides this
functionality, and is already been used for this purpose in other parts
of the code (e.g.
[here](80402a6840/crates/zed/src/main.rs (L756))
or
[here](80402a6840/crates/ui/src/utils/format_distance.rs (L258)))

These usages end up calling the `time_format` crate, which takes in a
`UtcOffset`. It's probably cleaner to rewrite the crate to take in
`chrono` types, but that would require rewriting most of the code there.

Release Notes:

- linux: Use local time zone in chat and Git blame

crates/editor/Cargo.toml

@@ -31,6 +31,7 @@ test-support = [
 aho-corasick = "1.1"
 anyhow.workspace = true
 assets.workspace = true
+chrono.workspace = true
 client.workspace = true
 clock.workspace = true
 collections.workspace = true

crates/editor/src/blame_entry_tooltip.rs

@@ -8,6 +8,7 @@ use gpui::{
 use settings::Settings;
 use std::hash::Hash;
 use theme::{ActiveTheme, ThemeSettings};
+use time::UtcOffset;
 use ui::{
     div, h_flex, tooltip_container, v_flex, Avatar, Button, ButtonStyle, Clickable as _, Color,
     FluentBuilder, Icon, IconName, IconPosition, InteractiveElement as _, IntoElement,
@@ -129,7 +130,7 @@ impl Render for BlameEntryTooltip {
         let author_email = self.blame_entry.author_mail.clone();
 
         let short_commit_id = self.blame_entry.sha.display_short();
-        let absolute_timestamp = blame_entry_absolute_timestamp(&self.blame_entry, cx);
+        let absolute_timestamp = blame_entry_absolute_timestamp(&self.blame_entry);
 
         let message = self
             .details
@@ -247,30 +248,25 @@ impl Render for BlameEntryTooltip {
     }
 }
 
-fn blame_entry_timestamp(
-    blame_entry: &BlameEntry,
-    format: time_format::TimestampFormat,
-    cx: &WindowContext,
-) -> String {
+fn blame_entry_timestamp(blame_entry: &BlameEntry, format: time_format::TimestampFormat) -> String {
     match blame_entry.author_offset_date_time() {
-        Ok(timestamp) => time_format::format_localized_timestamp(
-            timestamp,
-            time::OffsetDateTime::now_utc(),
-            cx.local_timezone(),
-            format,
-        ),
+        Ok(timestamp) => {
+            let local = chrono::Local::now().offset().local_minus_utc();
+            time_format::format_localized_timestamp(
+                timestamp,
+                time::OffsetDateTime::now_utc(),
+                UtcOffset::from_whole_seconds(local).unwrap(),
+                format,
+            )
+        }
         Err(_) => "Error parsing date".to_string(),
     }
 }
 
-pub fn blame_entry_relative_timestamp(blame_entry: &BlameEntry, cx: &WindowContext) -> String {
-    blame_entry_timestamp(blame_entry, time_format::TimestampFormat::Relative, cx)
+pub fn blame_entry_relative_timestamp(blame_entry: &BlameEntry) -> String {
+    blame_entry_timestamp(blame_entry, time_format::TimestampFormat::Relative)
 }
 
-fn blame_entry_absolute_timestamp(blame_entry: &BlameEntry, cx: &WindowContext) -> String {
-    blame_entry_timestamp(
-        blame_entry,
-        time_format::TimestampFormat::MediumAbsolute,
-        cx,
-    )
+fn blame_entry_absolute_timestamp(blame_entry: &BlameEntry) -> String {
+    blame_entry_timestamp(blame_entry, time_format::TimestampFormat::MediumAbsolute)
 }

crates/editor/src/element.rs

@@ -3923,7 +3923,7 @@ fn render_inline_blame_entry(
     workspace: Option<WeakView<Workspace>>,
     cx: &mut WindowContext<'_>,
 ) -> AnyElement {
-    let relative_timestamp = blame_entry_relative_timestamp(&blame_entry, cx);
+    let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
 
     let author = blame_entry.author.as_deref().unwrap_or_default();
     let text = format!("{}, {}", author, relative_timestamp);
@@ -3969,7 +3969,7 @@ fn render_blame_entry(
     };
     last_used_color.replace((sha_color, blame_entry.sha));
 
-    let relative_timestamp = blame_entry_relative_timestamp(&blame_entry, cx);
+    let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
 
     let short_commit_id = blame_entry.sha.display_short();