···

       
135
       
 
       
  enabled ++ (with all; [ imagick redis ]))

     

       
136
       
 
       
).packages.composer

     

       
137
       
 
       
```

     

       
0
       
 
       

     

       
0
       
 
       

     

       
0
       
 
       

     

       
0
       
 
       

     

       
0
       
 
       

     

       
0
       
 
       

     

       
0
       
 
       

     

       
0
       
 
       

     

       
0
       
 
       

     

       
0
       
 
       

     

       
0
       
 
       

     

       
0
       
 
       

     

       
0
       
 
       

     

       
0
       
 
       

     

       
0
       
 
       

     

       
0
       
 
       

     

       
0
       
 
       

     

       
0
       
 
       

     

···

       
135
       
 
       
  enabled ++ (with all; [ imagick redis ]))

     

       
136
       
 
       
).packages.composer

     

       
137
       
 
       
```

     

       
138
       
+
       


     

       
139
       
+
       
### Overriding PHP packages {#ssec-php-user-guide-overriding-packages}

     

       
140
       
+
       


     

       
141
       
+
       
`php-packages.nix` form a scope, allowing us to override the packages defined within. For example, to apply a patch to a `mysqlnd` extension, you can simply pass an overlay-style function to `php`’s `packageOverrides` argument:

     

       
142
       
+
       


     

       
143
       
+
       
```nix

     

       
144
       
+
       
php.override {

     

       
145
       
+
       
  packageOverrides = final: prev: {

     

       
146
       
+
       
    extensions = prev.extensions // {

     

       
147
       
+
       
      mysqlnd = prev.extensions.mysqlnd.overrideAttrs (attrs: {

     

       
148
       
+
       
        patches = attrs.patches or [] ++ [

     

       
149
       
+
       
          …

     

       
150
       
+
       
        ];

     

       
151
       
+
       
      });

     

       
152
       
+
       
    };

     

       
153
       
+
       
  };

     

       
154
       
+
       
}

     

       
155
       
+
       
```

     

···

       
13
       
 
       
    , version

     

       
14
       
 
       
    , sha256

     

       
15
       
 
       
    , extraPatches ? []

     

       
0
       
 
       

     

       
16
       
 
       


     

       
17
       
 
       
    # Sapi flags

     

       
18
       
 
       
    , cgiSupport ? true

     
···

       
50
       
 
       


     

       
51
       
 
       
              php-packages = (callPackage ../../../top-level/php-packages.nix {

     

       
52
       
 
       
                phpPackage = phpWithExtensions;

     

       
53
       
-
       
              });

     

       
54
       
 
       


     

       
55
       
 
       
              allExtensionFunctions = prevExtensionFunctions ++ [ extensions ];

     

       
56
       
 
       
              enabledExtensions =

     

···

       
13
       
 
       
    , version

     

       
14
       
 
       
    , sha256

     

       
15
       
 
       
    , extraPatches ? []

     

       
16
       
+
       
    , packageOverrides ? (final: prev: {})

     

       
17
       
 
       


     

       
18
       
 
       
    # Sapi flags

     

       
19
       
 
       
    , cgiSupport ? true

     
···

       
51
       
 
       


     

       
52
       
 
       
              php-packages = (callPackage ../../../top-level/php-packages.nix {

     

       
53
       
 
       
                phpPackage = phpWithExtensions;

     

       
54
       
+
       
              }).overrideScope' packageOverrides;

     

       
55
       
 
       


     

       
56
       
 
       
              allExtensionFunctions = prevExtensionFunctions ++ [ extensions ];

     

       
57
       
 
       
              enabledExtensions =