From 810f8313f1adac5dba9855914327fcd262f36cba Mon Sep 17 00:00:00 2001
From: Mikayla Maki <mikayla@zed.dev>
Date: Tue, 1 Sep 2026 21:39:47 +0000
Subject: [PATCH] Relicense zlog, ztracing, and ztracing_macro under Apache-2.0
 (#63573)

Relicenses `zlog`, `ztracing`, and `ztracing_macro` from
GPL-3.0-or-later to Apache-2.0.

GPUI depends on `ztracing`, which depends on `zlog`, so these crates
have to be non-copyleft for GPUI to ship as a permissively licensed
project.

- Switched the `license` field to `Apache-2.0` in all three manifests.
- Added the `LICENSE-APACHE` symlink to `zlog`, and dropped the
`LICENSE-GPL` symlinks from all three. `ztracing` and `ztracing_macro`
already carried both symlinks; now the on-disk license matches the
manifest.
- Declared `license = "Apache-2.0"` for `gpui_util`, which had a
`LICENSE-APACHE` symlink but no `license` field. `script/check-licenses`
doesn't catch that, since it only inspects symlinks.

No source changes; none of these crates carry GPL headers or in-source
license references.

Checked the rest of the subtree while here: the only first-party crates
reachable from `ztracing` via `cargo tree -e normal` are `collections`,
`gpui_util`, `zlog`, and `ztracing_macro`, all Apache-2.0 now.
Third-party deps (`tracing`, `tracing-subscriber`, `chrono`, `log`,
`anyhow`, `tracy-client`) are MIT/Apache.

`script/check-licenses` passes.

Release Notes:

- N/A
---
 crates/gpui_shared_string/Cargo.toml | 1 +
 crates/gpui_util/Cargo.toml          | 1 +
 crates/zlog/Cargo.toml               | 2 +-
 crates/zlog/LICENSE-APACHE           | 1 +
 crates/zlog/LICENSE-GPL              | 1 -
 crates/ztracing/Cargo.toml           | 2 +-
 crates/ztracing/LICENSE-GPL          | 1 -
 crates/ztracing_macro/Cargo.toml     | 2 +-
 crates/ztracing_macro/LICENSE-GPL    | 1 -
 9 files changed, 6 insertions(+), 6 deletions(-)
 create mode 120000 crates/zlog/LICENSE-APACHE
 delete mode 120000 crates/zlog/LICENSE-GPL
 delete mode 120000 crates/ztracing/LICENSE-GPL
 delete mode 120000 crates/ztracing_macro/LICENSE-GPL

diff --git a/crates/gpui_shared_string/Cargo.toml b/crates/gpui_shared_string/Cargo.toml
index e1e975a550..36ce41ac7f 100644
--- a/crates/gpui_shared_string/Cargo.toml
+++ b/crates/gpui_shared_string/Cargo.toml
@@ -3,6 +3,7 @@ name = "gpui_shared_string"
 version = "0.1.0"
 publish.workspace = true
 edition.workspace = true
+license = "Apache-2.0"
 
 [lib]
 path = "gpui_shared_string.rs"
diff --git a/crates/gpui_util/Cargo.toml b/crates/gpui_util/Cargo.toml
index cad692b04d..06810be206 100644
--- a/crates/gpui_util/Cargo.toml
+++ b/crates/gpui_util/Cargo.toml
@@ -3,6 +3,7 @@ name = "gpui_util"
 version = "0.1.0"
 publish.workspace = true
 edition.workspace = true
+license = "Apache-2.0"
 
 [dependencies]
 log.workspace = true
diff --git a/crates/zlog/Cargo.toml b/crates/zlog/Cargo.toml
index 2799592c8e..46f2cff324 100644
--- a/crates/zlog/Cargo.toml
+++ b/crates/zlog/Cargo.toml
@@ -3,7 +3,7 @@ name = "zlog"
 version = "0.1.0"
 edition.workspace = true
 publish.workspace = true
-license = "GPL-3.0-or-later"
+license = "Apache-2.0"
 
 [lints]
 workspace = true
diff --git a/crates/zlog/LICENSE-APACHE b/crates/zlog/LICENSE-APACHE
new file mode 120000
index 0000000000..1cd601d0a3
--- /dev/null
+++ b/crates/zlog/LICENSE-APACHE
@@ -0,0 +1 @@
+../../LICENSE-APACHE
\ No newline at end of file
diff --git a/crates/zlog/LICENSE-GPL b/crates/zlog/LICENSE-GPL
deleted file mode 120000
index 89e542f750..0000000000
--- a/crates/zlog/LICENSE-GPL
+++ /dev/null
@@ -1 +0,0 @@
-../../LICENSE-GPL
\ No newline at end of file
diff --git a/crates/ztracing/Cargo.toml b/crates/ztracing/Cargo.toml
index 81d3fc0d09..e823785acd 100644
--- a/crates/ztracing/Cargo.toml
+++ b/crates/ztracing/Cargo.toml
@@ -3,7 +3,7 @@ name = "ztracing"
 version = "0.1.0"
 edition.workspace = true
 publish.workspace = true
-license = "GPL-3.0-or-later"
+license = "Apache-2.0"
 
 [lints]
 workspace = true
diff --git a/crates/ztracing/LICENSE-GPL b/crates/ztracing/LICENSE-GPL
deleted file mode 120000
index 89e542f750..0000000000
--- a/crates/ztracing/LICENSE-GPL
+++ /dev/null
@@ -1 +0,0 @@
-../../LICENSE-GPL
\ No newline at end of file
diff --git a/crates/ztracing_macro/Cargo.toml b/crates/ztracing_macro/Cargo.toml
index dbd7adce5f..5420bc6063 100644
--- a/crates/ztracing_macro/Cargo.toml
+++ b/crates/ztracing_macro/Cargo.toml
@@ -3,7 +3,7 @@ name = "ztracing_macro"
 version = "0.1.0"
 edition.workspace = true
 publish.workspace = true
-license = "GPL-3.0-or-later"
+license = "Apache-2.0"
 
 [lib]
 proc-macro = true
diff --git a/crates/ztracing_macro/LICENSE-GPL b/crates/ztracing_macro/LICENSE-GPL
deleted file mode 120000
index 89e542f750..0000000000
--- a/crates/ztracing_macro/LICENSE-GPL
+++ /dev/null
@@ -1 +0,0 @@
-../../LICENSE-GPL
\ No newline at end of file