diff --git a/crates/uv-python/src/macos_dylib.rs b/crates/uv-python/src/macos_dylib.rs
index a77284da0..cf8f9c9f4 100644
--- a/crates/uv-python/src/macos_dylib.rs
+++ b/crates/uv-python/src/macos_dylib.rs
@@ -1,15 +1,28 @@
 use std::{io::ErrorKind, path::PathBuf};
 
+use tempfile::tempdir_in;
 use uv_fs::Simplified as _;
 use uv_warnings::warn_user;
 
 use crate::managed::ManagedPythonInstallation;
 
 pub fn patch_dylib_install_name(dylib: PathBuf) -> Result<(), Error> {
+    // If `install_name_tool` fails, it seems to be capable of rendering the dylib unusable.
+    // So we'll create a copy, patch that, then, on success, replace the original
+    let tmp = tempdir_in(
+        dylib
+            .parent()
+            .expect("dylib should have a parent directory"),
+    )?;
+    let tmp_dylib = tmp
+        .path()
+        .join(dylib.file_name().expect("dylib should have a file name"));
+    fs_err::copy(&dylib, &tmp_dylib)?;
+
     let output = match std::process::Command::new("install_name_tool")
         .arg("-id")
         .arg(&dylib)
-        .arg(&dylib)
+        .arg(&tmp_dylib)
         .output()
     {
         Ok(output) => output,
@@ -28,6 +41,8 @@ pub fn patch_dylib_install_name(dylib: PathBuf) -> Result<(), Error> {
         return Err(Error::RenameError { dylib, stderr });
     }
 
+    fs_err::rename(tmp_dylib, dylib)?;
+
     Ok(())
 }
 
diff --git a/crates/uv/tests/it/python_install.rs b/crates/uv/tests/it/python_install.rs
index 41b046026..e5c97e2f5 100644
--- a/crates/uv/tests/it/python_install.rs
+++ b/crates/uv/tests/it/python_install.rs
@@ -75,23 +75,23 @@ fn python_install() {
     "###);
 
     // Should be a no-op when already installed
-    uv_snapshot!(context.filters(), context.python_install(), @r###"
+    uv_snapshot!(context.filters(), context.python_install(), @r"
     success: true
     exit_code: 0
     ----- stdout -----
 
     ----- stderr -----
     Python is already installed. Use `uv python install <request>` to install another version.
-    "###);
+    ");
 
     // Similarly, when a requested version is already installed
-    uv_snapshot!(context.filters(), context.python_install().arg("3.13"), @r###"
+    uv_snapshot!(context.filters(), context.python_install().arg("3.13"), @r"
     success: true
     exit_code: 0
     ----- stdout -----
 
     ----- stderr -----
-    "###);
+    ");
 
     // You can opt-in to a reinstall
     uv_snapshot!(context.filters(), context.python_install().arg("3.13").arg("--reinstall"), @r"
@@ -250,14 +250,14 @@ fn python_install_automatic() {
     // Otherwise, we should fetch the latest Python version
     uv_snapshot!(context.filters(), context.run()
         .env_remove("VIRTUAL_ENV")
-        .arg("python").arg("-c").arg("import sys; print(sys.version_info[:2])"), @r###"
+        .arg("python").arg("-c").arg("import sys; print(sys.version_info[:2])"), @r"
     success: true
     exit_code: 0
     ----- stdout -----
     (3, 13)
 
     ----- stderr -----
-    "###);
+    ");
 
     // Subsequently, we can use the interpreter even with downloads disabled
     uv_snapshot!(context.filters(), context.run()
@@ -276,14 +276,14 @@ fn python_install_automatic() {
     uv_snapshot!(context.filters(), context.run()
     .env_remove("VIRTUAL_ENV")
     .arg("-p").arg("3.12")
-    .arg("python").arg("-c").arg("import sys; print(sys.version_info[:2])"), @r###"
+    .arg("python").arg("-c").arg("import sys; print(sys.version_info[:2])"), @r"
     success: true
     exit_code: 0
     ----- stdout -----
     (3, 12)
 
     ----- stderr -----
-    "###);
+    ");
 
     // But some requests cannot be mapped to a download
     uv_snapshot!(context.filters(), context.run()
@@ -322,14 +322,14 @@ fn python_install_automatic() {
             // In tests, we ignore `PATH` during Python discovery so we need to add the context `bin`
             .env("UV_TEST_PYTHON_PATH", context.bin_dir.as_os_str())
             .arg("-p").arg("3.11")
-            .arg("python").arg("-c").arg("import sys; print(sys.version_info[:2])"), @r###"
+            .arg("python").arg("-c").arg("import sys; print(sys.version_info[:2])"), @r"
         success: true
         exit_code: 0
         ----- stdout -----
         (3, 11)
 
         ----- stderr -----
-        "###);
+        ");
     }
 }
 
@@ -358,14 +358,13 @@ fn regression_cpython() {
     uv_snapshot!(context.filters(), context.run()
         .env_remove("VIRTUAL_ENV")
         .arg("-p").arg("3.12")
-        .arg("mre.py"), @r###"
+        .arg("mre.py"), @r"
     success: true
     exit_code: 0
     ----- stdout -----
 
     ----- stderr -----
-
-    "###);
+    ");
 }
 
 #[test]
@@ -630,14 +629,14 @@ fn python_install_preview() {
     "###);
 
     // Should be a no-op when already installed
-    uv_snapshot!(context.filters(), context.python_install().arg("--preview"), @r###"
+    uv_snapshot!(context.filters(), context.python_install().arg("--preview"), @r"
     success: true
     exit_code: 0
     ----- stdout -----
 
     ----- stderr -----
     Python is already installed. Use `uv python install <request>` to install another version.
-    "###);
+    ");
 
     // You can opt-in to a reinstall
     uv_snapshot!(context.filters(), context.python_install().arg("--preview").arg("--reinstall"), @r"
@@ -931,7 +930,7 @@ fn python_install_preview_upgrade() {
     }
 
     // Installing 3.12.4 should not replace the executable, but also shouldn't fail
-    uv_snapshot!(context.filters(), context.python_install().arg("--preview").arg("3.12.4"), @r###"
+    uv_snapshot!(context.filters(), context.python_install().arg("--preview").arg("3.12.4"), @r"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -939,7 +938,7 @@ fn python_install_preview_upgrade() {
     ----- stderr -----
     Installed Python 3.12.4 in [TIME]
      + cpython-3.12.4-[PLATFORM]
-    "###);
+    ");
 
     if cfg!(unix) {
         insta::with_settings!({
@@ -960,7 +959,7 @@ fn python_install_preview_upgrade() {
     }
 
     // Using `--reinstall` is not sufficient to replace it either
-    uv_snapshot!(context.filters(), context.python_install().arg("--preview").arg("3.12.4").arg("--reinstall"), @r###"
+    uv_snapshot!(context.filters(), context.python_install().arg("--preview").arg("3.12.4").arg("--reinstall"), @r"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -968,7 +967,7 @@ fn python_install_preview_upgrade() {
     ----- stderr -----
     Installed Python 3.12.4 in [TIME]
      ~ cpython-3.12.4-[PLATFORM]
-    "###);
+    ");
 
     if cfg!(unix) {
         insta::with_settings!({
@@ -989,7 +988,7 @@ fn python_install_preview_upgrade() {
     }
 
     // But `--force` is
-    uv_snapshot!(context.filters(), context.python_install().arg("--preview").arg("3.12.4").arg("--force"), @r###"
+    uv_snapshot!(context.filters(), context.python_install().arg("--preview").arg("3.12.4").arg("--force"), @r"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -997,7 +996,7 @@ fn python_install_preview_upgrade() {
     ----- stderr -----
     Installed Python 3.12.4 in [TIME]
      + cpython-3.12.4-[PLATFORM] (python3.12)
-    "###);
+    ");
 
     if cfg!(unix) {
         insta::with_settings!({
@@ -1018,7 +1017,7 @@ fn python_install_preview_upgrade() {
     }
 
     // But installing 3.12.6 should upgrade automatically
-    uv_snapshot!(context.filters(), context.python_install().arg("--preview").arg("3.12.6"), @r###"
+    uv_snapshot!(context.filters(), context.python_install().arg("--preview").arg("3.12.6"), @r"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -1026,7 +1025,7 @@ fn python_install_preview_upgrade() {
     ----- stderr -----
     Installed Python 3.12.6 in [TIME]
      + cpython-3.12.6-[PLATFORM] (python3.12)
-    "###);
+    ");
 
     if cfg!(unix) {
         insta::with_settings!({
@@ -2029,7 +2028,7 @@ fn python_install_patch_dylib() {
     let mut cmd = std::process::Command::new("otool");
     cmd.arg("-D").arg(dylib.as_ref());
 
-    uv_snapshot!(context.filters(), cmd, @r###"
+    uv_snapshot!(context.filters(), cmd, @r"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -2037,7 +2036,7 @@ fn python_install_patch_dylib() {
     [TEMP_DIR]/managed/cpython-3.13.1-[PLATFORM]/lib/libpython3.13.dylib
 
     ----- stderr -----
-    "###);
+    ");
 }
 
 #[test]
@@ -2172,14 +2171,14 @@ fn python_install_cached() {
     // Should be a no-op when already installed
     uv_snapshot!(context.filters(), context
         .python_install()
-        .env(EnvVars::UV_PYTHON_CACHE_DIR, python_cache.as_ref()), @r###"
+        .env(EnvVars::UV_PYTHON_CACHE_DIR, python_cache.as_ref()), @r"
     success: true
     exit_code: 0
     ----- stdout -----
 
     ----- stderr -----
     Python is already installed. Use `uv python install <request>` to install another version.
-    "###);
+    ");
 
     uv_snapshot!(context.filters(), context.python_uninstall().arg("3.13"), @r"
     success: true