···

       
501
       
501
       
 
       


     

       
502
       
502
       
 
       
### Fetching patches

     

       
503
       
503
       
 
       


     

       
504
       
504
       
-
       
In the interest of keeping our maintenance burden and the size of Nixpkgs to a minimum, patches already merged upstream or published elsewhere _should_ be retrieved using `fetchpatch`:

     

       
504
       
504
       
+
       
In the interest of keeping our maintenance burden and the size of Nixpkgs to a minimum, patches already merged upstream or published elsewhere _should_ be retrieved using `fetchpatch2`:

     

       
505
       
505
       
 
       


     

       
506
       
506
       
 
       
```nix

     

       
507
       
507
       
 
       
{

     

       
508
       
508
       
 
       
  patches = [

     

       
509
       
509
       
-
       
    (fetchpatch {

     

       
509
       
509
       
+
       
    (fetchpatch2 {

     

       
510
       
510
       
 
       
      name = "fix-check-for-using-shared-freetype-lib.patch";

     

       
511
       
511
       
 
       
      url = "http://git.ghostscript.com/?p=ghostpdl.git;a=patch;h=8f5d285";

     

       
512
       
512
       
 
       
      hash = "sha256-uRcxaCjd+WAuGrXOmGfFeu79cUILwkRdBu48mwcBE7g=";

     
···

       
515
       
515
       
 
       
}

     

       
516
       
516
       
 
       
```

     

       
517
       
517
       
 
       


     

       
518
       
518
       
-
       
If a patch is available online but does not cleanly apply, it can be modified in some fixed ways by using additional optional arguments for `fetchpatch`. Check [the `fetchpatch` reference](https://nixos.org/manual/nixpkgs/unstable/#fetchpatch) for details.

     

       
518
       
518
       
+
       
If a patch is available online but does not cleanly apply, it can be modified in some fixed ways by using additional optional arguments for `fetchpatch2`. Check [the `fetchpatch` reference](https://nixos.org/manual/nixpkgs/unstable/#fetchpatch) for details.

     

       
519
       
519
       
 
       


     

       
520
       
520
       
 
       
### Vendoring patches

     

       
521
       
521