Merging upstream version 1.71.1+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

21 files changed, 1569 insertions, 0 deletions

diff --git a/vendor/iana-time-zone/.cargo-checksum.json b/vendor/iana-time-zone/.cargo-checksum.json
new file mode 100644
index 000000000..1ff051c20
--- /dev/null
+++ b/vendor/iana-time-zone/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"CHANGELOG.md":"6002d865cdaa676f19ab808b8545bb1e8993a6778e549a6ea187dd3dc743baa9","Cargo.lock":"c4aa3f484b70d79c93718b0118d0fdd175d2737a1756e5e4cb80fa17c0aaecac","Cargo.toml":"d05222cc7ad10943b33bc95d7e6e116dd9689a3e498909257c460ce5090f2038","LICENSE-APACHE":"696759d65dfe558ff7d9f031c76db19ec5c0767470fb67c4e8d990820d1e99c9","LICENSE-MIT":"da28ccc6b158fc2d8cccc74e99794b1cff1d29bd7bbeb019442fcf0c04c6cad9","README.md":"c5531c44131c4b4473a747d6eab8868d31964da70af6264650253212df5ba9f4","examples/get_timezone.rs":"c4db7b1cc71c7b3728ddd70e76c0dbd40239c6b1b8c705cb63476757d3177dec","examples/stress-test.rs":"3ad469de5a650389699c9ffe5fd78af2bdd46e7140cc05391c60d793fc6f8e98","src/ffi_utils.rs":"bfbd155b004c2fc4e793aec4604c7b353f71caf35bf67e9b34cd07349628571f","src/lib.rs":"ed60b3581f02879544d87be98764f439676a1b88da7d927c7ec4a785295ec114","src/platform.rs":"bef2c3ead64d498cefedc2555194bb492db06e3d49423bdcdec5f6c5696cf091","src/tz_android.rs":"3da37f1b87f87a0ed215734f2b373b2d187bcf49386adfe8bfff207f9a5e8fe2","src/tz_freebsd.rs":"4247af5c6dd0712705186ed54d789193c64139f707af316d4fde86aa1e2a1b13","src/tz_haiku.rs":"761afd80301683a44bf937bbf6b13c5c792af42ed7037623bbeccbab6d0aa8fc","src/tz_illumos.rs":"375ae951d1417f63e6d77c9add7f7f646f24c0054cb8407bd4b9f06907494888","src/tz_linux.rs":"7bbc921fcbc71d87c5527b45f7d44963fcef5a6f2a015b78a858cf441c9e1727","src/tz_macos.rs":"081d5e60955268a1b6949089354eb6657de1c2eb569a69f4e094b995270d540d","src/tz_netbsd.rs":"ec278bbe1cb5f648c063ec23bff6081146454b9f6aa3918b9ca50b8804d5838f","src/tz_wasm32.rs":"10aa33caa86645a16e2126fe1a86dda2b57f63caa9addcd726245fbc9657dc1b","src/tz_windows.rs":"9cafe592b28505c9d2bb9adfb2924c877f1fc2685ee2be2b1e68ed45f64553f1"},"package":"0722cd7114b7de04316e7ea5456a0bbb20e4adb46fd27a3697adb812cff0f37c"}
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diff --git a/vendor/iana-time-zone/CHANGELOG.md b/vendor/iana-time-zone/CHANGELOG.md
new file mode 100644
index 000000000..81159ca28
--- /dev/null
+++ b/vendor/iana-time-zone/CHANGELOG.md
@@ -0,0 +1,307 @@
+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [0.1.56] - 2023-04-03
+### Changed
+- update `windows` dependency ([#102](https://github.com/strawlab/iana-time-zone/pull/102))
+
+## [0.1.55] - 2023-03-30
+### Changed
+- update `windows` dependency ([#101](https://github.com/strawlab/iana-time-zone/pull/101))
+
+## [0.1.54] - 2023-03-21
+### Changed
+- replace `winapi` dependency with `windows` ([#97](https://github.com/strawlab/iana-time-zone/pull/97))
+- bump msrv to 1.48 ([#91](https://github.com/strawlab/iana-time-zone/pull/91))
+
+## [0.1.53] - 2022-10-28
+### Fixed
+- remove lint causing breakage on rust 1.45-1.51 ([#84](https://github.com/strawlab/iana-time-zone/pull/84))
+
+## [0.1.52] - 2022-10-28
+### Fixed
+- fix for NixOS ([#81](https://github.com/strawlab/iana-time-zone/pull/81))
+
+### Changed
+- allow building the haiku crate on other hosts([#75](https://github.com/strawlab/iana-time-zone/pull/75))
+- various improvements in continuous integration and source quality
+  ([#76](https://github.com/strawlab/iana-time-zone/pull/76)),
+  ([#77](https://github.com/strawlab/iana-time-zone/pull/77)),
+  ([#78](https://github.com/strawlab/iana-time-zone/pull/78)),
+  ([#81](https://github.com/strawlab/iana-time-zone/pull/81))
+
+## [0.1.51] - 2022-10-08
+### Changed
+- bump MSRV to 1.38 ([#70](https://github.com/strawlab/iana-time-zone/pull/70))
+- Refactor Android property key CStr construction to add tests ([#69](https://github.com/strawlab/iana-time-zone/pull/69))
+- Refactor MacOS implementation a lot ([#67](https://github.com/strawlab/iana-time-zone/pull/67))
+
+### Added
+- Implement for Haiku ([#66](https://github.com/strawlab/iana-time-zone/pull/66))
+
+### Fixed
+- Fix spelling of 'initialized' in sync::Once statics ([#63](https://github.com/strawlab/iana-time-zone/pull/63))
+
+## [0.1.50] - 2022-09-23
+### Fixed
+- Reduce MSRV for Android again ([#62](https://github.com/strawlab/iana-time-zone/pull/62))
+
+## [0.1.49] - 2022-09-22
+### Changed
+- `once_cell` dependency is not needed ([#61](https://github.com/strawlab/iana-time-zone/pull/61))
+
+## [0.1.48] - 2022-09-12
+### Changed
+- Downgrade requirements for WASM dependencies ([#58](https://github.com/strawlab/iana-time-zone/pull/58))
+- Reduce MSRV for Tier 1 platforms to 1.31 ([#59](https://github.com/strawlab/iana-time-zone/pull/59))
+
+## [0.1.47] - 2022-08-30
+### Changed
+- Update `android_system_properties` to v0.1.5 to run 9786% faster (YMMV) ([#56](https://github.com/strawlab/iana-time-zone/pull/56))
+
+## [0.1.46] - 2022-08-18
+### Added
+- Implement for Solaris ([#55](https://github.com/strawlab/iana-time-zone/pull/55))
+
+## [0.1.45] - 2022-08-16
+### Fixed
+- Fix potential use after free in MacOS / iOS ([#54](https://github.com/strawlab/iana-time-zone/pull/54), [RUSTSEC-2022-0049](https://rustsec.org/advisories/RUSTSEC-2022-0049.html))
+- Fix typos in README ([#53](https://github.com/strawlab/iana-time-zone/pull/53))
+
+## [0.1.44] - 2022-08-11
+### Fixed
+- "/etc/localtime" may be relative link ([#49](https://github.com/strawlab/iana-time-zone/pull/49))
+
+## [0.1.43] - 2022-08-11
+### Changed
+- Use `core-foundation-sys` instead of `core-foundation` ([#50](https://github.com/strawlab/iana-time-zone/pull/50))
+
+## [0.1.42] - 2022-08-10
+### Fixed
+- Fix implementation for Redhat based distros ([#48](https://github.com/strawlab/iana-time-zone/pull/48))
+
+## [0.1.41] - 2022-08-02
+### Added
+- Add `fallback` feature ([#46](https://github.com/strawlab/iana-time-zone/pull/46))
+
+## [0.1.40] - 2022-07-29
+### Added
+- Implement for Android ([#45](https://github.com/strawlab/iana-time-zone/pull/45))
+
+## [0.1.38] - 2022-07-27
+### Added
+- Implement illumos ([#44](https://github.com/strawlab/iana-time-zone/pull/44))
+### Changed
+- Update examples in README
+
+## [0.1.37] - 2022-07-23
+### Added
+- Support iOS ([#41](https://github.com/strawlab/iana-time-zone/pull/41))
+### Changed
+- Implement `std::err::source()`, format `IoError` ([#42](https://github.com/strawlab/iana-time-zone/pull/42))
+
+## [0.1.36] - 2022-07-21
+### Fixed
+- Fail to compile for WASI ([#40](https://github.com/strawlab/iana-time-zone/pull/40))
+
+## [0.1.35] - 2022-06-29
+### Added
+- Implement for FreeBSD, NetBSD, OpenBSD and Dragonfly ([#39](https://github.com/strawlab/iana-time-zone/pull/39))
+
+## [0.1.34] - 2022-06-29
+### Added
+- Implement for wasm32 ([#38](https://github.com/strawlab/iana-time-zone/pull/38))
+
+## [0.1.33] - 2022-04-15
+### Changed
+- Use `winapi` crate instead of `windows` crate ([#35](https://github.com/strawlab/iana-time-zone/pull/35))
+
+## [0.1.32] - 2022-04-06
+### Changed
+- Update `windows` requirement from 0.34 to 0.35 ([#34](https://github.com/strawlab/iana-time-zone/pull/34))
+
+## [0.1.31] - 2022-03-16
+### Changed
+- Update `windows` requirement from 0.33 to 0.34 ([#33](https://github.com/strawlab/iana-time-zone/pull/33))
+
+## [0.1.30] - 2022-02-28
+### Changed
+- Fewer string allocations ([#32](https://github.com/strawlab/iana-time-zone/pull/32))
+
+## [0.1.29] - 2022-02-25
+### Changed
+- Update `windows` requirement from 0.32 to 0.33 ([#31](https://github.com/strawlab/iana-time-zone/pull/31))
+
+## [0.1.28] - 2022-02-04
+### Changed
+- Update `windows` requirement from 0.30 to 0.32 ([#30](https://github.com/strawlab/iana-time-zone/pull/30))
+
+## [0.1.27] - 2022-01-14
+### Changed
+- Update `windows` requirement from 0.29 to 0.30 ([#29](https://github.com/strawlab/iana-time-zone/pull/29))
+
+## [0.1.26] - 2021-12-23
+### Changed
+- Update `windows` requirement from 0.28 to 0.29 ([#28](https://github.com/strawlab/iana-time-zone/pull/28))
+
+## [0.1.25] - 2021-11-18
+### Changed
+- Update `windows` requirement from 0.27 to 0.28 ([#27](https://github.com/strawlab/iana-time-zone/pull/27))
+
+## [0.1.24] - 2021-11-16
+### Changed
+- Update `windows` requirement from 0.26 to 0.27 ([#26](https://github.com/strawlab/iana-time-zone/pull/26))
+
+## [0.1.23] - 2021-11-12
+### Changed
+- Update `windows` requirement from 0.25 to 0.26 ([#25](https://github.com/strawlab/iana-time-zone/pull/25))
+
+## [0.1.22] - 2021-11-08
+### Changed
+- Update `windows` requirement from 0.24 to 0.25 ([#24](https://github.com/strawlab/iana-time-zone/pull/24))
+
+## [0.1.21] - 2021-11-02
+### Changed
+- Update `windows` requirement from 0.23 to 0.24 ([#23](https://github.com/strawlab/iana-time-zone/pull/23))
+
+## [0.1.20] - 2021-10-29
+### Changed
+- Update `windows` requirement from 0.21 to 0.23 ([#22](https://github.com/strawlab/iana-time-zone/pull/22))
+
+## [0.1.19] - 2021-09-27
+### Changed
+- Update `windows` requirement from 0.19 to 0.21 ([#18](https://github.com/strawlab/iana-time-zone/pull/18), [#20](https://github.com/strawlab/iana-time-zone/pull/20))
+- Update `chrono-tz` requirement from 0.5 to 0.6 ([#19](https://github.com/strawlab/iana-time-zone/pull/19))
+
+## [0.1.18] - 2021-08-23
+### Changed
+- Update `windows` requirement from 0.18 to 0.19 ([#17](https://github.com/strawlab/iana-time-zone/pull/17))
+
+## [0.1.16] - 2021-07-26
+### Changed
+- Update `windows` requirement from 0.17 to 0.18 ([#16](https://github.com/strawlab/iana-time-zone/pull/16))
+
+## [0.1.15] - 2021-07-08
+### Changed
+- Update `windows` requirement from 0.14 to 0.17 ([#15](https://github.com/strawlab/iana-time-zone/pull/15))
+
+## [0.1.14] - 2021-07-07
+### Changed
+- Update `windows` requirement from 0.13 to 0.14 ([#14](https://github.com/strawlab/iana-time-zone/pull/14))
+
+## [0.1.13] - 2021-06-28
+### Changed
+- Update `windows` requirement from 0.12 to 0.13 ([#13](https://github.com/strawlab/iana-time-zone/pull/13))
+
+## [0.1.12] - 2021-06-28
+### Changed
+- Update `windows` requirement from 0.11 to 0.12 ([#12](https://github.com/strawlab/iana-time-zone/pull/12))
+
+## [0.1.11] - 2021-06-12
+### Changed
+- Update `windows` requirement from 0.10 to 0.11 ([#11](https://github.com/strawlab/iana-time-zone/pull/11))
+
+## [0.1.10] - 2021-05-13
+### Changed
+- Update `windows` requirement from 0.9 to 0.10 ([#10](https://github.com/strawlab/iana-time-zone/pull/10))
+
+## [0.1.9] - 2021-04-28
+### Changed
+- Update `windows` requirement from 0.8 to 0.9 ([#8](https://github.com/strawlab/iana-time-zone/pull/8))
+
+## [0.1.8] - 2021-04-13
+### Changed
+- Update `windows` requirement from 0.7 to 0.8 ([#7](https://github.com/strawlab/iana-time-zone/pull/7))
+
+## [0.1.7] - 2021-03-30
+### Changed
+- Update `windows` requirement from 0.6 to 0.7 ([#6](https://github.com/strawlab/iana-time-zone/pull/6))
+
+## [0.1.6] - 2021-03-24
+### Changed
+- Update `windows` requirement from 0.5 to 0.6 ([#5](https://github.com/strawlab/iana-time-zone/pull/5))
+
+## [0.1.5] - 2021-03-20
+### Changed
+- Update `windows` requirement from 0.4 to 0.5 ([#4](https://github.com/strawlab/iana-time-zone/pull/4))
+
+## [0.1.4] - 2021-03-11
+### Changed
+- Update `windows` requirement from 0.3 to 0.4 ([#3](https://github.com/strawlab/iana-time-zone/pull/3))
+
+## [0.1.3] - 2021-02-22
+### Changed
+- Use `windows` crate instead of `winrt`
+
+## [0.1.2] - 2020-10-09
+### Changed
+- Update `core-foundation` requirement from 0.7 to 0.9 ([#1](https://github.com/strawlab/iana-time-zone/pull/1))
+
+## [0.1.1] - 2020-06-27
+### Changed
+- Update `core-foundation` requirement from 0.5 to 0.7
+
+## [0.1.0] - 2020-06-27
+### Added
+- Implement for Linux, Windows, MacOS
+
+[0.1.56]: https://github.com/strawlab/iana-time-zone/releases/tag/v0.1.56
+[0.1.55]: https://github.com/strawlab/iana-time-zone/releases/tag/v0.1.55
+[0.1.54]: https://github.com/strawlab/iana-time-zone/releases/tag/v0.1.54
+[0.1.53]: https://github.com/strawlab/iana-time-zone/releases/tag/v0.1.53
+[0.1.52]: https://github.com/strawlab/iana-time-zone/releases/tag/v0.1.52
+[0.1.51]: https://github.com/strawlab/iana-time-zone/releases/tag/v0.1.51
+[0.1.50]: https://github.com/strawlab/iana-time-zone/releases/tag/v0.1.50
+[0.1.49]: https://github.com/strawlab/iana-time-zone/releases/tag/v0.1.49
+[0.1.48]: https://github.com/strawlab/iana-time-zone/releases/tag/v0.1.48
+[0.1.47]: https://github.com/strawlab/iana-time-zone/releases/tag/v0.1.47
+[0.1.46]: https://github.com/strawlab/iana-time-zone/releases/tag/v0.1.46
+[0.1.45]: https://github.com/strawlab/iana-time-zone/releases/tag/v0.1.45
+[0.1.44]: https://github.com/strawlab/iana-time-zone/releases/tag/0.1.44
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+[0.1.23]: https://github.com/strawlab/iana-time-zone/releases/tag/0.1.23
+[0.1.22]: https://github.com/strawlab/iana-time-zone/releases/tag/0.1.22
+[0.1.21]: https://github.com/strawlab/iana-time-zone/releases/tag/0.1.21
+[0.1.20]: https://github.com/strawlab/iana-time-zone/releases/tag/0.1.20
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+[0.1.8]: https://github.com/strawlab/iana-time-zone/releases/tag/0.1.8
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+[0.1.3]: https://github.com/strawlab/iana-time-zone/releases/tag/0.1.3
+[0.1.2]: https://github.com/strawlab/iana-time-zone/releases/tag/0.1.2
+[0.1.1]: https://github.com/strawlab/iana-time-zone/releases/tag/0.1.1
+[0.1.0]: https://github.com/strawlab/iana-time-zone/releases/tag/0.1.0
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diff --git a/vendor/iana-time-zone/Cargo.toml b/vendor/iana-time-zone/Cargo.toml
new file mode 100644
index 000000000..5cdc175a7
--- /dev/null
+++ b/vendor/iana-time-zone/Cargo.toml
@@ -0,0 +1,58 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2018"
+name = "iana-time-zone"
+version = "0.1.56"
+authors = [
+    "Andrew Straw <strawman@astraw.com>",
+    "René Kijewski <rene.kijewski@fu-berlin.de>",
+    "Ryan Lopopolo <rjl@hyperbo.la>",
+]
+description = "get the IANA time zone for the current system"
+readme = "README.md"
+keywords = [
+    "IANA",
+    "time",
+]
+categories = [
+    "date-and-time",
+    "internationalization",
+    "os",
+]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/strawlab/iana-time-zone"
+
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+version = "0.1.1"
+
+[target."cfg(target_os = \"windows\")".dependencies.windows]
+version = "0.48.0"
+features = ["Globalization"]
diff --git a/vendor/iana-time-zone/LICENSE-APACHE b/vendor/iana-time-zone/LICENSE-APACHE
new file mode 100644
index 000000000..18af3f6fe
--- /dev/null
+++ b/vendor/iana-time-zone/LICENSE-APACHE
@@ -0,0 +1,201 @@
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
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+7. Disclaimer of Warranty. Unless required by applicable law or
+   agreed to in writing, Licensor provides the Work (and each
+   Contributor provides its Contributions) on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+   implied, including, without limitation, any warranties or conditions
+   of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+   PARTICULAR PURPOSE. You are solely responsible for determining the
+   appropriateness of using or redistributing the Work and assume any
+   risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory,
+   whether in tort (including negligence), contract, or otherwise,
+   unless required by applicable law (such as deliberate and grossly
+   negligent acts) or agreed to in writing, shall any Contributor be
+   liable to You for damages, including any direct, indirect, special,
+   incidental, or consequential damages of any character arising as a
+   result of this License or out of the use or inability to use the
+   Work (including but not limited to damages for loss of goodwill,
+   work stoppage, computer failure or malfunction, or any and all
+   other commercial damages or losses), even if such Contributor
+   has been advised of the possibility of such damages.
+
+9. Accepting Warranty or Additional Liability. While redistributing
+   the Work or Derivative Works thereof, You may choose to offer,
+   and charge a fee for, acceptance of support, warranty, indemnity,
+   or other liability obligations and/or rights consistent with this
+   License. However, in accepting such obligations, You may act only
+   on Your own behalf and on Your sole responsibility, not on behalf
+   of any other Contributor, and only if You agree to indemnify,
+   defend, and hold each Contributor harmless for any liability
+   incurred by, or claims asserted against, such Contributor by reason
+   of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
+
+APPENDIX: How to apply the Apache License to your work.
+
+   To apply the Apache License to your work, attach the following
+   boilerplate notice, with the fields enclosed by brackets "[]"
+   replaced with your own identifying information. (Don't include
+   the brackets!)  The text should be enclosed in the appropriate
+   comment syntax for the file format. We also recommend that a
+   file or class name and description of purpose be included on the
+   same "printed page" as the copyright notice for easier
+   identification within third-party archives.
+
+Copyright 2020 Andrew Straw
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+	http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
diff --git a/vendor/iana-time-zone/LICENSE-MIT b/vendor/iana-time-zone/LICENSE-MIT
new file mode 100644
index 000000000..8f8dd90d8
--- /dev/null
+++ b/vendor/iana-time-zone/LICENSE-MIT
@@ -0,0 +1,25 @@
+Copyright (c) 2020 Andrew D. Straw
+
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without
+limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software
+is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice
+shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
diff --git a/vendor/iana-time-zone/README.md b/vendor/iana-time-zone/README.md
new file mode 100644
index 000000000..f9e80e206
--- /dev/null
+++ b/vendor/iana-time-zone/README.md
@@ -0,0 +1,47 @@
+# iana-time-zone - get the IANA time zone for the current system
+
+[![Crates.io](https://img.shields.io/crates/v/iana-time-zone.svg)](https://crates.io/crates/iana-time-zone)
+[![Documentation](https://docs.rs/iana-time-zone/badge.svg)](https://docs.rs/iana-time-zone/)
+[![Crate License](https://img.shields.io/crates/l/iana-time-zone.svg)](https://crates.io/crates/iana-time-zone)
+[![build](https://github.com/strawlab/iana-time-zone/workflows/build/badge.svg?branch=main)](https://github.com/strawlab/iana-time-zone/actions?query=branch%3Amain)
+
+This small utility crate gets the IANA time zone for the current system.
+This is also known the [tz database](https://en.wikipedia.org/wiki/Tz_database),
+tzdata, the zoneinfo database, and the Olson database.
+
+Example:
+
+```rust
+// Get the current time zone as a string.
+let tz_str = iana_time_zone::get_timezone()?;
+println!("The current time zone is: {}", tz_str);
+```
+
+You can test this is working on your platform with:
+
+```
+cargo run --example get_timezone
+```
+
+## Minimum supported rust version policy
+
+This crate has a minimum supported rust version (MSRV) of 1.48
+for [Tier 1](https://doc.rust-lang.org/1.63.0/rustc/platform-support.html) platforms.
+
+Updates to the MSRV are sometimes necessary due to the MSRV of dependencies. MSRV updates will
+not be indicated as a breaking change to the semver version.
+
+## License
+
+Licensed under either of
+
+* Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or
+  <http://www.apache.org/licenses/LICENSE-2.0>)
+* MIT license ([LICENSE-MIT](LICENSE-MIT) or
+  <http://opensource.org/licenses/MIT>)
+
+at your option.
+
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in the work by you, as defined in the Apache-2.0 license, shall be
+dual licensed as above, without any additional terms or conditions.
diff --git a/vendor/iana-time-zone/examples/get_timezone.rs b/vendor/iana-time-zone/examples/get_timezone.rs
new file mode 100644
index 000000000..0f5119f56
--- /dev/null
+++ b/vendor/iana-time-zone/examples/get_timezone.rs
@@ -0,0 +1,6 @@
+use iana_time_zone::{get_timezone, GetTimezoneError};
+
+fn main() -> Result<(), GetTimezoneError> {
+    println!("{}", get_timezone()?);
+    Ok(())
+}
diff --git a/vendor/iana-time-zone/examples/stress-test.rs b/vendor/iana-time-zone/examples/stress-test.rs
new file mode 100644
index 000000000..73df86f51
--- /dev/null
+++ b/vendor/iana-time-zone/examples/stress-test.rs
@@ -0,0 +1,25 @@
+use std::sync::atomic::{AtomicUsize, Ordering};
+use std::thread::spawn;
+
+use iana_time_zone::get_timezone;
+
+const THREADS: usize = 10;
+const ITERATIONS: usize = 100_000;
+
+static COUNT: AtomicUsize = AtomicUsize::new(0);
+
+fn main() {
+    let mut threads = Vec::with_capacity(THREADS);
+    for _ in 0..THREADS {
+        threads.push(spawn(|| {
+            for _ in 0..ITERATIONS {
+                get_timezone().unwrap();
+                COUNT.fetch_add(1, Ordering::Relaxed);
+            }
+        }));
+    }
+    for thread in threads {
+        thread.join().unwrap();
+    }
+    assert_eq!(COUNT.load(Ordering::SeqCst), THREADS * ITERATIONS);
+}
diff --git a/vendor/iana-time-zone/src/ffi_utils.rs b/vendor/iana-time-zone/src/ffi_utils.rs
new file mode 100644
index 000000000..842b850e8
--- /dev/null
+++ b/vendor/iana-time-zone/src/ffi_utils.rs
@@ -0,0 +1,49 @@
+//! Cross platform FFI helpers.
+
+use std::ffi::CStr;
+
+// The system property named 'persist.sys.timezone' contains the name of the
+// current timezone.
+//
+// From https://android.googlesource.com/platform/bionic/+/gingerbread-release/libc/docs/OVERVIEW.TXT#79:
+//
+// > The name of the current timezone is taken from the TZ environment variable,
+// > if defined. Otherwise, the system property named 'persist.sys.timezone' is
+// > checked instead.
+const ANDROID_TIMEZONE_PROPERTY_NAME: &[u8] = b"persist.sys.timezone\0";
+
+/// Return a [`CStr`] to access the timezone from an Android system properties
+/// environment.
+pub(crate) fn android_timezone_property_name() -> &'static CStr {
+    // In tests or debug mode, opt into extra runtime checks.
+    if cfg!(any(test, debug_assertions)) {
+        return CStr::from_bytes_with_nul(ANDROID_TIMEZONE_PROPERTY_NAME).unwrap();
+    }
+
+    // SAFETY: the key is NUL-terminated and there are no other NULs, this
+    // invariant is checked in tests.
+    unsafe { CStr::from_bytes_with_nul_unchecked(ANDROID_TIMEZONE_PROPERTY_NAME) }
+}
+
+#[cfg(test)]
+mod tests {
+    use std::ffi::CStr;
+
+    use super::{android_timezone_property_name, ANDROID_TIMEZONE_PROPERTY_NAME};
+
+    #[test]
+    fn test_android_timezone_property_name_is_valid_cstr() {
+        CStr::from_bytes_with_nul(ANDROID_TIMEZONE_PROPERTY_NAME).unwrap();
+
+        let mut invalid_property_name = ANDROID_TIMEZONE_PROPERTY_NAME.to_owned();
+        invalid_property_name.push(b'\0');
+        CStr::from_bytes_with_nul(&invalid_property_name).unwrap_err();
+    }
+
+    #[test]
+    fn test_android_timezone_property_name_getter() {
+        let key = android_timezone_property_name().to_bytes_with_nul();
+        assert_eq!(key, ANDROID_TIMEZONE_PROPERTY_NAME);
+        std::str::from_utf8(key).unwrap();
+    }
+}
diff --git a/vendor/iana-time-zone/src/lib.rs b/vendor/iana-time-zone/src/lib.rs
new file mode 100644
index 000000000..fe4e3fb84
--- /dev/null
+++ b/vendor/iana-time-zone/src/lib.rs
@@ -0,0 +1,113 @@
+#![warn(clippy::all)]
+#![warn(clippy::cargo)]
+#![warn(clippy::undocumented_unsafe_blocks)]
+#![allow(unknown_lints)]
+#![warn(missing_copy_implementations)]
+#![warn(missing_debug_implementations)]
+#![warn(missing_docs)]
+#![warn(rust_2018_idioms)]
+#![warn(trivial_casts, trivial_numeric_casts)]
+#![warn(unused_qualifications)]
+#![warn(variant_size_differences)]
+
+//! get the IANA time zone for the current system
+//!
+//! This small utility crate provides the
+//! [`get_timezone()`](fn.get_timezone.html) function.
+//!
+//! ```rust
+//! // Get the current time zone as a string.
+//! let tz_str = iana_time_zone::get_timezone()?;
+//! println!("The current time zone is: {}", tz_str);
+//! # Ok::<(), iana_time_zone::GetTimezoneError>(())
+//! ```
+//!
+//! The resulting string can be parsed to a
+//! [`chrono-tz::Tz`](https://docs.rs/chrono-tz/latest/chrono_tz/enum.Tz.html)
+//! variant like this:
+//! ```ignore
+//! let tz_str = iana_time_zone::get_timezone()?;
+//! let tz: chrono_tz::Tz = tz_str.parse()?;
+//! ```
+
+#[allow(dead_code)]
+mod ffi_utils;
+
+#[cfg_attr(target_os = "linux", path = "tz_linux.rs")]
+#[cfg_attr(target_os = "windows", path = "tz_windows.rs")]
+#[cfg_attr(any(target_os = "macos", target_os = "ios"), path = "tz_macos.rs")]
+#[cfg_attr(
+    all(target_arch = "wasm32", not(target_os = "wasi")),
+    path = "tz_wasm32.rs"
+)]
+#[cfg_attr(
+    any(target_os = "freebsd", target_os = "dragonfly"),
+    path = "tz_freebsd.rs"
+)]
+#[cfg_attr(
+    any(target_os = "netbsd", target_os = "openbsd"),
+    path = "tz_netbsd.rs"
+)]
+#[cfg_attr(
+    any(target_os = "illumos", target_os = "solaris"),
+    path = "tz_illumos.rs"
+)]
+#[cfg_attr(target_os = "android", path = "tz_android.rs")]
+#[cfg_attr(target_os = "haiku", path = "tz_haiku.rs")]
+mod platform;
+
+/// Error types
+#[derive(Debug)]
+pub enum GetTimezoneError {
+    /// Failed to parse
+    FailedParsingString,
+    /// Wrapped IO error
+    IoError(std::io::Error),
+    /// Platform-specific error from the operating system
+    OsError,
+}
+
+impl std::error::Error for GetTimezoneError {
+    fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
+        match self {
+            GetTimezoneError::FailedParsingString => None,
+            GetTimezoneError::IoError(err) => Some(err),
+            GetTimezoneError::OsError => None,
+        }
+    }
+}
+
+impl std::fmt::Display for GetTimezoneError {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> Result<(), std::fmt::Error> {
+        f.write_str(match self {
+            GetTimezoneError::FailedParsingString => "GetTimezoneError::FailedParsingString",
+            GetTimezoneError::IoError(err) => return err.fmt(f),
+            GetTimezoneError::OsError => "OsError",
+        })
+    }
+}
+
+impl From<std::io::Error> for GetTimezoneError {
+    fn from(orig: std::io::Error) -> Self {
+        GetTimezoneError::IoError(orig)
+    }
+}
+
+/// Get the current IANA time zone as a string.
+///
+/// See the module-level documentation for a usage example and more details
+/// about this function.
+#[inline]
+pub fn get_timezone() -> Result<String, GetTimezoneError> {
+    platform::get_timezone_inner()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn get_current() {
+        println!("current: {}", get_timezone().unwrap());
+    }
+}
diff --git a/vendor/iana-time-zone/src/platform.rs b/vendor/iana-time-zone/src/platform.rs
new file mode 100644
index 000000000..5992bf377
--- /dev/null
+++ b/vendor/iana-time-zone/src/platform.rs
@@ -0,0 +1,9 @@
+pub fn get_timezone_inner() -> std::result::Result<String, crate::GetTimezoneError> {
+    Err(crate::GetTimezoneError::OsError)
+}
+
+#[cfg(not(feature = "fallback"))]
+compile_error!(
+    "iana-time-zone is currently implemented for Linux, Window, MacOS, FreeBSD, NetBSD, \
+    OpenBSD, Dragonfly, WebAssembly (browser), iOS, Illumos, Android, Solaris and Haiku.",
+);
diff --git a/vendor/iana-time-zone/src/tz_android.rs b/vendor/iana-time-zone/src/tz_android.rs
new file mode 100644
index 000000000..27255b52f
--- /dev/null
+++ b/vendor/iana-time-zone/src/tz_android.rs
@@ -0,0 +1,27 @@
+use std::sync::Once;
+
+use android_system_properties::AndroidSystemProperties;
+
+use crate::ffi_utils::android_timezone_property_name;
+
+pub(crate) fn get_timezone_inner() -> Result<String, crate::GetTimezoneError> {
+    let key = android_timezone_property_name();
+
+    get_properties()
+        .and_then(|properties| properties.get_from_cstr(key))
+        .ok_or(crate::GetTimezoneError::OsError)
+}
+
+fn get_properties() -> Option<&'static AndroidSystemProperties> {
+    static INITIALIZED: Once = Once::new();
+    static mut PROPERTIES: Option<AndroidSystemProperties> = None;
+
+    INITIALIZED.call_once(|| {
+        let properties = AndroidSystemProperties::new();
+        // SAFETY: `INITIALIZED` is synchronizing. The variable is only assigned to once.
+        unsafe { PROPERTIES = Some(properties) };
+    });
+
+    // SAFETY: `INITIALIZED` is synchronizing. The variable is only assigned to once.
+    unsafe { PROPERTIES.as_ref() }
+}
diff --git a/vendor/iana-time-zone/src/tz_freebsd.rs b/vendor/iana-time-zone/src/tz_freebsd.rs
new file mode 100644
index 000000000..4d55e1536
--- /dev/null
+++ b/vendor/iana-time-zone/src/tz_freebsd.rs
@@ -0,0 +1,7 @@
+pub(crate) fn get_timezone_inner() -> Result<String, crate::GetTimezoneError> {
+    // see https://gitlab.gnome.org/GNOME/evolution-data-server/-/issues/19
+    let mut contents = std::fs::read_to_string("/var/db/zoneinfo")?;
+    // Trim to the correct length without allocating.
+    contents.truncate(contents.trim_end().len());
+    Ok(contents)
+}
diff --git a/vendor/iana-time-zone/src/tz_haiku.rs b/vendor/iana-time-zone/src/tz_haiku.rs
new file mode 100644
index 000000000..d78372b6d
--- /dev/null
+++ b/vendor/iana-time-zone/src/tz_haiku.rs
@@ -0,0 +1,3 @@
+pub(crate) fn get_timezone_inner() -> Result<String, crate::GetTimezoneError> {
+    iana_time_zone_haiku::get_timezone().ok_or(crate::GetTimezoneError::OsError)
+}
diff --git a/vendor/iana-time-zone/src/tz_illumos.rs b/vendor/iana-time-zone/src/tz_illumos.rs
new file mode 100644
index 000000000..17b099b10
--- /dev/null
+++ b/vendor/iana-time-zone/src/tz_illumos.rs
@@ -0,0 +1,22 @@
+use std::fs::OpenOptions;
+use std::io::{BufRead, BufReader};
+
+pub(crate) fn get_timezone_inner() -> Result<String, crate::GetTimezoneError> {
+    // https://illumos.org/man/5/TIMEZONE
+    // https://docs.oracle.com/cd/E23824_01/html/821-1473/uc-timezone-4.html
+
+    let file = OpenOptions::new().read(true).open("/etc/default/init")?;
+    let mut reader = BufReader::with_capacity(1536, file);
+    let mut line = String::with_capacity(80);
+    loop {
+        line.clear();
+        let count = reader.read_line(&mut line)?;
+        if count == 0 {
+            return Err(crate::GetTimezoneError::FailedParsingString);
+        } else if line.starts_with("TZ=") {
+            line.truncate(line.trim_end().len());
+            line.replace_range(..3, "");
+            return Ok(line);
+        }
+    }
+}
diff --git a/vendor/iana-time-zone/src/tz_linux.rs b/vendor/iana-time-zone/src/tz_linux.rs
new file mode 100644
index 000000000..c1133e1cd
--- /dev/null
+++ b/vendor/iana-time-zone/src/tz_linux.rs
@@ -0,0 +1,45 @@
+use std::fs::{read_link, read_to_string};
+
+pub(crate) fn get_timezone_inner() -> Result<String, crate::GetTimezoneError> {
+    etc_localtime().or_else(|_| etc_timezone())
+}
+
+fn etc_timezone() -> Result<String, crate::GetTimezoneError> {
+    // see https://stackoverflow.com/a/12523283
+    let mut contents = read_to_string("/etc/timezone")?;
+    // Trim to the correct length without allocating.
+    contents.truncate(contents.trim_end().len());
+    Ok(contents)
+}
+
+fn etc_localtime() -> Result<String, crate::GetTimezoneError> {
+    // Per <https://www.man7.org/linux/man-pages/man5/localtime.5.html>:
+    // “ The /etc/localtime file configures the system-wide timezone of the local system that is
+    //   used by applications for presentation to the user. It should be an absolute or relative
+    //   symbolic link pointing to /usr/share/zoneinfo/, followed by a timezone identifier such as
+    //   "Europe/Berlin" or "Etc/UTC". The resulting link should lead to the corresponding binary
+    //   tzfile(5) timezone data for the configured timezone. ”
+
+    // Systemd does not canonicalize the link, but only checks if it is prefixed by
+    // "/usr/share/zoneinfo/" or "../usr/share/zoneinfo/". So we do the same.
+    // <https://github.com/systemd/systemd/blob/9102c625a673a3246d7e73d8737f3494446bad4e/src/basic/time-util.c#L1493>
+
+    const PREFIXES: &[&str] = &[
+        "/usr/share/zoneinfo/",   // absolute path
+        "../usr/share/zoneinfo/", // relative path
+        "/etc/zoneinfo/",         // absolute path for NixOS
+        "../etc/zoneinfo/",       // relative path for NixOS
+    ];
+    let mut s = read_link("/etc/localtime")?
+        .into_os_string()
+        .into_string()
+        .map_err(|_| crate::GetTimezoneError::FailedParsingString)?;
+    for &prefix in PREFIXES {
+        if s.starts_with(prefix) {
+            // Trim to the correct length without allocating.
+            s.replace_range(..prefix.len(), "");
+            return Ok(s);
+        }
+    }
+    Err(crate::GetTimezoneError::FailedParsingString)
+}
diff --git a/vendor/iana-time-zone/src/tz_macos.rs b/vendor/iana-time-zone/src/tz_macos.rs
new file mode 100644
index 000000000..70c39e83f
--- /dev/null
+++ b/vendor/iana-time-zone/src/tz_macos.rs
@@ -0,0 +1,144 @@
+pub(crate) fn get_timezone_inner() -> Result<String, crate::GetTimezoneError> {
+    get_timezone().ok_or(crate::GetTimezoneError::OsError)
+}
+
+#[inline]
+fn get_timezone() -> Option<String> {
+    // The longest name in the IANA time zone database is 25 ASCII characters long.
+    const MAX_LEN: usize = 32;
+    let mut buf = [0; MAX_LEN];
+
+    // Get system time zone, and borrow its name.
+    let tz = system_time_zone::SystemTimeZone::new()?;
+    let name = tz.name()?;
+
+    // If the name is encoded in UTF-8, copy it directly.
+    let name = if let Some(name) = name.as_utf8() {
+        name
+    } else {
+        // Otherwise convert the name to UTF-8.
+        name.to_utf8(&mut buf)?
+    };
+
+    if name.is_empty() || name.len() >= MAX_LEN {
+        // The name should not be empty, or excessively long.
+        None
+    } else {
+        Some(name.to_owned())
+    }
+}
+
+mod system_time_zone {
+    //! create a safe wrapper around `CFTimeZoneRef`
+
+    use core_foundation_sys::base::{CFRelease, CFTypeRef};
+    use core_foundation_sys::timezone::{CFTimeZoneCopySystem, CFTimeZoneGetName, CFTimeZoneRef};
+
+    pub(crate) struct SystemTimeZone(CFTimeZoneRef);
+
+    impl Drop for SystemTimeZone {
+        fn drop(&mut self) {
+            // SAFETY: `SystemTimeZone` is only ever created with a valid `CFTimeZoneRef`.
+            unsafe { CFRelease(self.0 as CFTypeRef) };
+        }
+    }
+
+    impl SystemTimeZone {
+        pub(crate) fn new() -> Option<Self> {
+            // SAFETY: No invariants to uphold. We'll release the pointer when we don't need it anymore.
+            let v: CFTimeZoneRef = unsafe { CFTimeZoneCopySystem() };
+            if v.is_null() {
+                None
+            } else {
+                Some(SystemTimeZone(v))
+            }
+        }
+
+        /// Get the time zone name as a [super::string_ref::StringRef].
+        ///
+        /// The lifetime of the `StringRef` is bound to our lifetime. Mutable
+        /// access is also prevented by taking a reference to `self`.
+        pub(crate) fn name(&self) -> Option<super::string_ref::StringRef<'_, Self>> {
+            // SAFETY: `SystemTimeZone` is only ever created with a valid `CFTimeZoneRef`.
+            let string = unsafe { CFTimeZoneGetName(self.0) };
+            if string.is_null() {
+                None
+            } else {
+                // SAFETY: here we ensure that `string` is a valid pointer.
+                Some(unsafe { super::string_ref::StringRef::new(string, self) })
+            }
+        }
+    }
+}
+
+mod string_ref {
+    //! create safe wrapper around `CFStringRef`
+
+    use std::convert::TryInto;
+
+    use core_foundation_sys::base::{Boolean, CFRange};
+    use core_foundation_sys::string::{
+        kCFStringEncodingUTF8, CFStringGetBytes, CFStringGetCStringPtr, CFStringGetLength,
+        CFStringRef,
+    };
+
+    pub(crate) struct StringRef<'a, T> {
+        string: CFStringRef,
+        // We exclude mutable access to the parent by taking a reference to the
+        // parent (rather than, for example, just using a marker to enforce the
+        // parent's lifetime).
+        _parent: &'a T,
+    }
+
+    impl<'a, T> StringRef<'a, T> {
+        // SAFETY: `StringRef` must be valid pointer
+        pub(crate) unsafe fn new(string: CFStringRef, _parent: &'a T) -> Self {
+            Self { string, _parent }
+        }
+
+        pub(crate) fn as_utf8(&self) -> Option<&'a str> {
+            // SAFETY: `StringRef` is only ever created with a valid `CFStringRef`.
+            let v = unsafe { CFStringGetCStringPtr(self.string, kCFStringEncodingUTF8) };
+            if !v.is_null() {
+                // SAFETY: `CFStringGetCStringPtr()` returns NUL-terminated strings.
+                let v = unsafe { std::ffi::CStr::from_ptr(v) };
+                if let Ok(v) = v.to_str() {
+                    return Some(v);
+                }
+            }
+            None
+        }
+
+        pub(crate) fn to_utf8<'b>(&self, buf: &'b mut [u8]) -> Option<&'b str> {
+            // SAFETY: `StringRef` is only ever created with a valid `CFStringRef`.
+            let length = unsafe { CFStringGetLength(self.string) };
+
+            let mut buf_bytes = 0;
+            let range = CFRange {
+                location: 0,
+                length,
+            };
+
+            let converted_bytes = unsafe {
+                // SAFETY: `StringRef` is only ever created with a valid `CFStringRef`.
+                CFStringGetBytes(
+                    self.string,
+                    range,
+                    kCFStringEncodingUTF8,
+                    b'\0',
+                    false as Boolean,
+                    buf.as_mut_ptr(),
+                    buf.len() as isize,
+                    &mut buf_bytes,
+                )
+            };
+            if converted_bytes != length {
+                return None;
+            }
+
+            let len = buf_bytes.try_into().ok()?;
+            let s = buf.get(..len)?;
+            std::str::from_utf8(s).ok()
+        }
+    }
+}
diff --git a/vendor/iana-time-zone/src/tz_netbsd.rs b/vendor/iana-time-zone/src/tz_netbsd.rs
new file mode 100644
index 000000000..84cf8b05e
--- /dev/null
+++ b/vendor/iana-time-zone/src/tz_netbsd.rs
@@ -0,0 +1,25 @@
+use std::fs::read_link;
+
+pub(crate) fn get_timezone_inner() -> Result<String, crate::GetTimezoneError> {
+    // see https://www.cyberciti.biz/faq/openbsd-time-zone-howto/
+
+    // This is a backport of the Linux implementation.
+    // NetBSDs is less than thorough how the softlink should be set up.
+
+    const PREFIXES: &[&str] = &[
+        "/usr/share/zoneinfo/",   // absolute path
+        "../usr/share/zoneinfo/", // relative path
+    ];
+    let mut s = read_link("/etc/localtime")?
+        .into_os_string()
+        .into_string()
+        .map_err(|_| crate::GetTimezoneError::FailedParsingString)?;
+    for &prefix in PREFIXES {
+        if s.starts_with(prefix) {
+            // Trim to the correct length without allocating.
+            s.replace_range(..prefix.len(), "");
+            return Ok(s);
+        }
+    }
+    Err(crate::GetTimezoneError::FailedParsingString)
+}
diff --git a/vendor/iana-time-zone/src/tz_wasm32.rs b/vendor/iana-time-zone/src/tz_wasm32.rs
new file mode 100644
index 000000000..69c36b553
--- /dev/null
+++ b/vendor/iana-time-zone/src/tz_wasm32.rs
@@ -0,0 +1,21 @@
+use js_sys::{Array, Intl, Object, Reflect};
+use wasm_bindgen::JsValue;
+
+pub(crate) fn get_timezone_inner() -> Result<String, crate::GetTimezoneError> {
+    let intl = Intl::DateTimeFormat::new(&Array::new(), &Object::new()).resolved_options();
+    Reflect::get(&intl, &JsValue::from_str("timeZone"))
+        .ok()
+        .and_then(|tz| tz.as_string())
+        .ok_or(crate::GetTimezoneError::OsError)
+}
+
+#[cfg(test)]
+mod tests {
+    use wasm_bindgen_test::*;
+
+    #[wasm_bindgen_test]
+    fn pass() {
+        let tz = super::get_timezone_inner().unwrap();
+        console_log!("tz={:?}", tz);
+    }
+}
diff --git a/vendor/iana-time-zone/src/tz_windows.rs b/vendor/iana-time-zone/src/tz_windows.rs
new file mode 100644
index 000000000..eaa5d5a48
--- /dev/null
+++ b/vendor/iana-time-zone/src/tz_windows.rs
@@ -0,0 +1,13 @@
+use windows::Globalization::Calendar;
+
+impl From<windows::core::Error> for crate::GetTimezoneError {
+    fn from(orig: windows::core::Error) -> Self {
+        crate::GetTimezoneError::IoError(std::io::Error::new(std::io::ErrorKind::Other, orig))
+    }
+}
+
+pub(crate) fn get_timezone_inner() -> Result<String, crate::GetTimezoneError> {
+    let cal = Calendar::new()?;
+    let tz_hstring = cal.GetTimeZone()?;
+    Ok(tz_hstring.to_string())
+}