Update the cfg recommended by rustc book

diesel/Cargo.toml

@@ -49,10 +49,10 @@ downcast-rs = "1.2.1"
 version = "~2.2.0"
 path = "../diesel_derives"
 
-[target.'cfg(not(all(target_family = "wasm", not(target_os = "wasi"))))'.dependencies]
+[target.'cfg(not(all(target_family = "wasm", target_os = "unknown")))'.dependencies]
 libsqlite3-sys = { version = ">=0.17.2, <0.31.0", optional = true, features = ["bundled_bindings"] }
 
-[target.'cfg(all(target_family = "wasm", not(target_os = "wasi")))'.dependencies]
+[target.'cfg(all(target_family = "wasm", target_os = "unknown"))'.dependencies]
 sqlite-wasm-rs = { version = "0.1.1", optional = true }
 
 [dev-dependencies]

diesel/src/lib.rs

@@ -773,7 +773,7 @@ pub mod prelude {
     // Initializing the database is a one-time operation during
     // the life of the program.
     #[cfg(feature = "sqlite")]
-    #[cfg(all(target_family = "wasm", not(target_os = "wasi")))]
+    #[cfg(all(target_family = "wasm", target_os = "unknown"))]
     pub use sqlite_wasm_rs::init_sqlite;
 }
 

diesel/src/sqlite/connection/bind_collector.rs

@@ -3,9 +3,9 @@ use crate::serialize::{IsNull, Output};
 use crate::sql_types::HasSqlType;
 use crate::sqlite::{Sqlite, SqliteType};
 use crate::QueryResult;
-#[cfg(not(all(target_family = "wasm", not(target_os = "wasi"))))]
+#[cfg(not(all(target_family = "wasm", target_os = "unknown")))]
 use libsqlite3_sys as ffi;
-#[cfg(all(target_family = "wasm", not(target_os = "wasi")))]
+#[cfg(all(target_family = "wasm", target_os = "unknown"))]
 use sqlite_wasm_rs::c as ffi;
 
 #[derive(Debug, Default)]

diesel/src/sqlite/connection/functions.rs

@@ -1,7 +1,7 @@
-#[cfg(not(all(target_family = "wasm", not(target_os = "wasi"))))]
+#[cfg(not(all(target_family = "wasm", target_os = "unknown")))]
 extern crate libsqlite3_sys as ffi;
 
-#[cfg(all(target_family = "wasm", not(target_os = "wasi")))]
+#[cfg(all(target_family = "wasm", target_os = "unknown"))]
 use sqlite_wasm_rs::c as ffi;
 
 use super::raw::RawConnection;

diesel/src/sqlite/connection/mod.rs

@@ -1,7 +1,7 @@
-#[cfg(not(all(target_family = "wasm", not(target_os = "wasi"))))]
+#[cfg(not(all(target_family = "wasm", target_os = "unknown")))]
 extern crate libsqlite3_sys as ffi;
 
-#[cfg(all(target_family = "wasm", not(target_os = "wasi")))]
+#[cfg(all(target_family = "wasm", target_os = "unknown"))]
 use sqlite_wasm_rs::c as ffi;
 
 mod bind_collector;

diesel/src/sqlite/connection/raw.rs

@@ -1,8 +1,8 @@
 #![allow(unsafe_code)] // ffi calls
-#[cfg(not(all(target_family = "wasm", not(target_os = "wasi"))))]
+#[cfg(not(all(target_family = "wasm", target_os = "unknown")))]
 extern crate libsqlite3_sys as ffi;
 
-#[cfg(all(target_family = "wasm", not(target_os = "wasi")))]
+#[cfg(all(target_family = "wasm", target_os = "unknown"))]
 use sqlite_wasm_rs::c as ffi;
 
 use std::ffi::{CString, NulError};
@@ -53,17 +53,17 @@ impl RawConnection {
         // This support is only available when sqlite is loaded from a
         // Worker thread, whether it's loaded in its own dedicated worker
         // or in a worker together with client code.
-        #[cfg(all(target_family = "wasm", not(target_os = "wasi")))]
+        #[cfg(all(target_family = "wasm", target_os = "unknown"))]
         let vfs = CString::new("opfs")?;
 
         let connection_status = unsafe {
             ffi::sqlite3_open_v2(
                 database_url.as_ptr(),
                 &mut conn_pointer,
                 flags,
-                #[cfg(not(all(target_family = "wasm", not(target_os = "wasi"))))]
+                #[cfg(not(all(target_family = "wasm", target_os = "unknown")))]
                 ptr::null(),
-                #[cfg(all(target_family = "wasm", not(target_os = "wasi")))]
+                #[cfg(all(target_family = "wasm", target_os = "unknown"))]
                 vfs.as_ptr(),
             )
         };

diesel/src/sqlite/connection/serialized_database.rs

@@ -1,8 +1,8 @@
 #![allow(unsafe_code)]
-#[cfg(not(all(target_family = "wasm", not(target_os = "wasi"))))]
+#[cfg(not(all(target_family = "wasm", target_os = "unknown")))]
 extern crate libsqlite3_sys as ffi;
 
-#[cfg(all(target_family = "wasm", not(target_os = "wasi")))]
+#[cfg(all(target_family = "wasm", target_os = "unknown"))]
 use sqlite_wasm_rs::c as ffi;
 
 use std::ops::Deref;

diesel/src/sqlite/connection/sqlite_value.rs

@@ -1,8 +1,8 @@
 #![allow(unsafe_code)] // ffi calls
-#[cfg(not(all(target_family = "wasm", not(target_os = "wasi"))))]
+#[cfg(not(all(target_family = "wasm", target_os = "unknown")))]
 extern crate libsqlite3_sys as ffi;
 
-#[cfg(all(target_family = "wasm", not(target_os = "wasi")))]
+#[cfg(all(target_family = "wasm", target_os = "unknown"))]
 use sqlite_wasm_rs::c as ffi;
 
 use std::cell::Ref;

diesel/src/sqlite/connection/stmt.rs

@@ -8,9 +8,9 @@ use crate::query_builder::{QueryFragment, QueryId};
 use crate::result::Error::DatabaseError;
 use crate::result::*;
 use crate::sqlite::{Sqlite, SqliteType};
-#[cfg(not(all(target_family = "wasm", not(target_os = "wasi"))))]
+#[cfg(not(all(target_family = "wasm", target_os = "unknown")))]
 use libsqlite3_sys as ffi;
-#[cfg(all(target_family = "wasm", not(target_os = "wasi")))]
+#[cfg(all(target_family = "wasm", target_os = "unknown"))]
 use sqlite_wasm_rs::c as ffi;
 use std::cell::OnceCell;
 use std::ffi::{CStr, CString};