doc: fix example (#435473)

CONTRIBUTING.md

@@ -659,13 +659,13 @@ If you have any problems with formatting, please ping the [formatting team](http
   Do
 
   ```nix
-  { rev = version; }
+  { tag = version; }
   ```
 
   instead of
 
   ```nix
-  { rev = "${version}"; }
+  { tag = "${version}"; }
   ```
 
 - Building lists conditionally _should_ be done with `lib.optional(s)` instead of using `if cond then [ ... ] else null` or `if cond then [ ... ] else [ ]`.

doc/build-helpers/fetchers.chapter.md

@@ -765,7 +765,7 @@ Used with Subversion. Expects `url` to a Subversion directory, `rev`, and `hash`
 
 ## `fetchgit` {#fetchgit}
 
-Used with Git. Expects `url` to a Git repo, `rev`, and `hash`. `rev` in this case can be full the git commit id (SHA1 hash) or a tag name like `refs/tags/v1.0`.
+Used with Git. Expects `url` to a Git repo, `rev` or `tag`, and `hash`. `rev` in this case can be full the git commit id (SHA1 hash), or use `tag` for a tag name like `refs/tags/v1.0`.
 
 If you want to fetch a tag you should pass the `tag` parameter instead of `rev` which has the same effect as setting `rev = "refs/tags"/${version}"`.
 This is safer than just setting `rev = version` w.r.t. possible branch and tag name conflicts.
@@ -1005,4 +1005,3 @@ fetchtorrent {
 
 - `config`: When using `transmission` as the `backend`, a json configuration can
   be supplied to transmission. Refer to the [upstream documentation](https://github.com/transmission/transmission/blob/main/docs/Editing-Configuration-Files.md) for information on how to configure.
-

doc/languages-frameworks/crystal.section.md

@@ -26,7 +26,7 @@ crystal.buildCrystalPackage rec {
   src = fetchFromGitHub {
     owner = "mint-lang";
     repo = "mint";
-    rev = version;
+    tag = version;
     hash = "sha256-dFN9l5fgrM/TtOPqlQvUYgixE4KPr629aBmkwdDoq28=";
   };
 
@@ -68,7 +68,7 @@ crystal.buildCrystalPackage rec {
   src = fetchFromGitHub {
     owner = "mint-lang";
     repo = "mint";
-    rev = version;
+    tag = version;
     hash = "sha256-dFN9l5fgrM/TtOPqlQvUYgixE4KPr629aBmkwdDoq28=";
   };
 

doc/languages-frameworks/go.section.md

@@ -84,7 +84,7 @@ nix-prefetch -E "{ sha256 }: ((import ./. { }).my-package.overrideAttrs { vendor
       version = "0.4.0";
       src = fetchFromGitHub {
         inherit (previousAttrs.src) owner repo;
-        rev = "v${finalAttrs.version}";
+        tag = "v${finalAttrs.version}";
         hash = "sha256-gVTpzmXekQxGMucDKskGi+e+34nJwwsXwvQTjRO6Gdg=";
       };
       vendorHash = "sha256-dUvp7FEW09V0xMuhewPGw3TuAic/sD7xyXEYviZ2Ivs=";

doc/languages-frameworks/javascript.section.md

@@ -539,7 +539,7 @@ stdenv.mkDerivation (finalAttrs: {
   src = fetchFromGitHub {
     owner = "...";
     repo = "...";
-    rev = "v${finalAttrs.version}";
+    tag = "v${finalAttrs.version}";
     hash = "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=";
   };
 

doc/languages-frameworks/maven.section.md

@@ -86,7 +86,7 @@ jd-cli.overrideMavenAttrs (old: rec {
   src = fetchFromGitHub {
     owner = old.src.owner;
     repo = old.src.repo;
-    rev = "${old.pname}-${version}";
+    tag = "${old.pname}-${version}";
     # old source hash of 1.2.0 version
     hash = "sha256-US7j6tQ6mh1libeHnQdFxPGoxHzbZHqehWSgCYynKx8=";
   };

doc/languages-frameworks/nim.section.md

@@ -20,7 +20,7 @@ buildNimPackage (finalAttrs: {
   src = fetchFromGitHub {
     owner = "inv2004";
     repo = "ttop";
-    rev = "v${finalAttrs.version}";
+    tag = "v${finalAttrs.version}";
     hash = lib.fakeHash;
   };
 
@@ -74,7 +74,7 @@ buildNimSbom (finalAttrs: {
   src = fetchFromSourcehut {
     owner = "~ehmry";
     repo = "nim_lk";
-    rev = finalAttrs.version;
+    tag = finalAttrs.version;
     hash = lib.fakeHash;
   };
   buildInputs = [ openssl ];

doc/languages-frameworks/php.section.md

@@ -307,7 +307,7 @@ stdenvNoCC.mkDerivation (
     src = fetchFromGitHub {
       owner = "git-owner";
       repo = "git-repo";
-      rev = finalAttrs.version;
+      tag = finalAttrs.version;
       hash = "sha256-VcQRSss2dssfkJ+iUb5qT+FJ10GHiFDzySigcmuVI+8=";
     };
   in