rust: update docs on legacyCargoFetcher; remove unnecessary defaults

As mentioned in NixOS#79975, the default on `legacyCargoFetcher` if left unspecified
is now `false`.

doc/languages-frameworks/rust.section.md

@@ -37,7 +37,6 @@ rustPlatform.buildRustPackage rec {
   };
 
   cargoSha256 = "17ldqr3asrdcsh4l29m3b5r37r5d0b3npq1lrgjmxb6vlx6a36qh";
-  legacyCargoFetcher = false;
 
   meta = with stdenv.lib; {
     description = "A fast line-oriented regex search tool, similar to ag and ack";
@@ -59,19 +58,9 @@ When the `Cargo.lock`, provided by upstream, is not in sync with the
 added in `cargoPatches` will also be prepended to the patches in `patches` at
 build-time.
 
-Setting `legacyCargoFetcher` to `false` enables the following behavior:
-
-1. The `Cargo.lock` file is copied into the cargo vendor directory.
-2. At buildtime, `buildRustPackage` will ensure that the `src` and `cargoSha256`
-   are consistent. This avoids errors where one but not the other is updated.
-3. The builder will compress the vendored cargo src directory into a tar.gz file
-   for storage after vendoring, and decompress it before the build. This saves
-   disk space and enables hashed mirrors for Rust dependencies.
-
-Note that this option changes the value of `cargoSha256`, so it is currently
-defaulted to `false`. When updating a Rust package, please set it to `true`;
-eventually we will default this to true and update the remaining Rust packages,
-then delete the option from all individual Rust package expressions.
+Unless `legacyCargoFetcher` is set to `true`, the fetcher will also verify that
+the `Cargo.lock` file is in sync with the `src` attribute, and will compress the
+vendor directory into a tar.gz archive.
 
 ### Building a crate for a different target
 

pkgs/applications/audio/spotify-tui/default.nix

@@ -11,13 +11,11 @@ rustPlatform.buildRustPackage rec {
     sha256 = "06xqj83m4hz00p8796m0df7lv9875p8zc1v6l9yqbiak1h95lq7h";
   };
 
-  legacyCargoFetcher = false;
-
   cargoSha256 = "1pc4n6lm1w0660ivm0kxzicpckvb351y62dpv0cxa7ckd3raa5pr";
 
   nativeBuildInputs = [ pkgconfig ] ++ stdenv.lib.optionals stdenv.isLinux [ python3 ];
   buildInputs = [ openssl ]
-  	++ stdenv.lib.optional stdenv.isLinux libxcb
+    ++ stdenv.lib.optional stdenv.isLinux libxcb
     ++ stdenv.lib.optionals stdenv.isDarwin [ AppKit Security ];
 
   meta = with stdenv.lib; {

pkgs/applications/audio/spotifyd/default.nix

@@ -15,8 +15,6 @@ rustPlatform.buildRustPackage rec {
     sha256 = "08i0zm7kgprixqjpgaxk7xid1njgj6lmi896jf9fsjqzdzlblqk8";
   };
 
-  legacyCargoFetcher = false;
-
   cargoSha256 = "0200apqbx769ggjnjr0m72g61ikhml2xak5n1il2pvfx1yf5nw0n";
 
   cargoBuildFlags = [

pkgs/applications/editors/hexdino/default.nix

@@ -12,7 +12,6 @@ rustPlatform.buildRustPackage {
   };
 
   cargoSha256 = "06ghcd4j751mdkzwb88nqwk8la4zdb137y0iqrkpykkfx0as43x3";
-  legacyCargoFetcher = false;
 
   buildInputs = [ ncurses ];
 

pkgs/applications/version-management/git-and-tools/git-workspace/default.nix

@@ -17,8 +17,6 @@ rustPlatform.buildRustPackage rec {
 
   cargoSha256 = "1z4cb7rcb7ldj16xxynrjh4hg872rj39rbbp0vy15kdp3ifyi466";
 
-  legacyCargoFetcher = false;
-
   buildInputs = with stdenv; lib.optional isDarwin Security;
 
   meta = with stdenv.lib; {

pkgs/development/tools/documentation/mdsh/default.nix

@@ -12,7 +12,6 @@ rustPlatform.buildRustPackage rec {
   };
 
   cargoSha256 = "1fxajh1n0qvcdas6w7dy3g92wilhfldy90pyk3779mrnh57fa6n5";
-  legacyCargoFetcher = false;
 
   meta = with stdenv.lib; {
     description = "Markdown shell pre-processor";

pkgs/tools/misc/broot/default.nix

@@ -12,7 +12,6 @@ rustPlatform.buildRustPackage rec {
   };
 
   cargoSha256 = "0zrwpmsrzwnjml0964zky8w222zmlargha3z0n6hf8cfshx23s4k";
-  legacyCargoFetcher = false;
 
   nativeBuildInputs = [ installShellFiles ];
 

pkgs/tools/misc/wagyu/default.nix

@@ -12,7 +12,6 @@ rustPlatform.buildRustPackage rec {
   };
 
   cargoSha256 = "16d1b3pamkg29nq80n6cbzc4zl9z3cgfvdxjkr2z4xrnzmkn1ysi";
-  legacyCargoFetcher = false;
 
   meta = with lib; {
     description = "Rust library for generating cryptocurrency wallets";

pkgs/tools/package-management/cargo-tree/default.nix

@@ -1,4 +1,5 @@
 { stdenv, lib, rustPlatform, fetchFromGitHub, pkgconfig, cmake, curl, libiconv, darwin }:
+
 rustPlatform.buildRustPackage rec {
   pname = "cargo-tree";
   version = "0.29.0";
@@ -10,8 +11,6 @@ rustPlatform.buildRustPackage rec {
     sha256 = "16k41pj66m2221n1v2szir7x7qwx4i0g3svck2c8cj76h0bqyy15";
   };
 
-  legacyCargoFetcher = false;
-
   cargoSha256 = "0762gdj4n5mlflhzynnny1h8z792zyxmb4kcn54jj7qzdask4qdy";
 
   nativeBuildInputs = [ pkgconfig cmake ];

pkgs/tools/package-management/nix-du/default.nix

@@ -1,4 +1,5 @@
 { stdenv, fetchFromGitHub, rustPlatform, nix, boost, graphviz, darwin }:
+
 rustPlatform.buildRustPackage rec {
   pname = "nix-du";
   version = "0.3.1";
@@ -9,8 +10,8 @@ rustPlatform.buildRustPackage rec {
     rev = "v${version}";
     sha256 = "149d60mid29s5alv5m3d7jrhyzc6cj7b6hpiq399gsdwzgxr00wq";
   };
+
   cargoSha256 = "1a6svl89dcdb5fpvs2i32i6agyhl0sx7kkkw70rqr17fyzl5psai";
-  legacyCargoFetcher = false;
 
   doCheck = true;
   checkInputs = [ graphviz ];

pkgs/tools/security/fido2luks/default.nix

@@ -20,7 +20,6 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [ pkg-config ];
 
   cargoSha256 = "0rp4f6xnwmvf3pv6h0qwsg01jrndf77yn67675ac39kxzmrzfy2f";
-  legacyCargoFetcher = false;
 
   meta = with stdenv.lib; {
     description = "Decrypt your LUKS partition using a FIDO2 compatible authenticator";

pkgs/tools/system/tre-command/default.nix

@@ -12,7 +12,6 @@ rustPlatform.buildRustPackage rec {
   };
 
   cargoSha256 = "1m3ccp5ncafkifg8sxyxczsg3ja1gvq8wmgni68bgzm2lwxh2qgw";
-  legacyCargoFetcher = false;
 
   meta = with stdenv.lib; {
     description = "Tree command, improved";