commit bd3d85928a10c5b66b02e632e1d8acfdf1d7af2c · pyrox.dev/nixpkgs

+61

pkgs/top-level/impure-overlays.nix

···

       1
       1
       +
       /**

     

       2
       2
       +
         This file has as its value the list of overlays, as determined from the environment.

     

       3
       3
       +
         If Nix evaluation is [pure](https://nix.dev/manual/nix/latest/command-ref/conf-file.html?highlight=pure-eval#conf-pure-eval), then the list is empty.

     

       4
       4
       +
       */

     

       5
       5
       +
       let

     

       6
       6
       +
         # Return ‘x’ if it evaluates, or ‘def’ if it throws an exception.

     

       7
       7
       +
         try =

     

       8
       8
       +
           x: def:

     

       9
       9
       +
           let

     

       10
       10
       +
             res = builtins.tryEval x;

     

       11
       11
       +
           in

     

       12
       12
       +
           if res.success then res.value else def;

     

       13
       13
       +
         homeDir = builtins.getEnv "HOME";

     

       14
       14
       +
       

     

       15
       15
       +
         isDir = path: builtins.pathExists (path + "/.");

     

       16
       16
       +
         pathOverlays = try (toString <nixpkgs-overlays>) "";

     

       17
       17
       +
         homeOverlaysFile = homeDir + "/.config/nixpkgs/overlays.nix";

     

       18
       18
       +
         homeOverlaysDir = homeDir + "/.config/nixpkgs/overlays";

     

       19
       19
       +
         overlays =

     

       20
       20
       +
           path:

     

       21
       21
       +
           # check if the path is a directory or a file

     

       22
       22
       +
           if isDir path then

     

       23
       23
       +
             # it's a directory, so the set of overlays from the directory, ordered lexicographically

     

       24
       24
       +
             let

     

       25
       25
       +
               content = builtins.readDir path;

     

       26
       26
       +
             in

     

       27
       27
       +
             map (n: import (path + ("/" + n))) (

     

       28
       28
       +
               builtins.filter (

     

       29
       29
       +
                 n:

     

       30
       30
       +
                 (

     

       31
       31
       +
                   builtins.match ".*\\.nix" n != null

     

       32
       32
       +
                   &&

     

       33
       33
       +
                     # ignore Emacs lock files (.#foo.nix)

     

       34
       34
       +
                     builtins.match "\\.#.*" n == null

     

       35
       35
       +
                 )

     

       36
       36
       +
                 || builtins.pathExists (path + ("/" + n + "/default.nix"))

     

       37
       37
       +
               ) (builtins.attrNames content)

     

       38
       38
       +
             )

     

       39
       39
       +
           else

     

       40
       40
       +
             # it's a file, so the result is the contents of the file itself

     

       41
       41
       +
             import path;

     

       42
       42
       +
       in

     

       43
       43
       +
       if pathOverlays != "" && builtins.pathExists pathOverlays then

     

       44
       44
       +
         overlays pathOverlays

     

       45
       45
       +
       else if builtins.pathExists homeOverlaysFile && builtins.pathExists homeOverlaysDir then

     

       46
       46
       +
         throw ''

     

       47
       47
       +
           Nixpkgs overlays can be specified with ${homeOverlaysFile} or ${homeOverlaysDir}, but not both.

     

       48
       48
       +
           Please remove one of them and try again.

     

       49
       49
       +
         ''

     

       50
       50
       +
       else if builtins.pathExists homeOverlaysFile then

     

       51
       51
       +
         if isDir homeOverlaysFile then

     

       52
       52
       +
           throw (homeOverlaysFile + " should be a file")

     

       53
       53
       +
         else

     

       54
       54
       +
           overlays homeOverlaysFile

     

       55
       55
       +
       else if builtins.pathExists homeOverlaysDir then

     

       56
       56
       +
         if !(isDir homeOverlaysDir) then

     

       57
       57
       +
           throw (homeOverlaysDir + " should be a directory")

     

       58
       58
       +
         else

     

       59
       59
       +
           overlays homeOverlaysDir

     

       60
       60
       +
       else

     

       61
       61
       +
         [ ]

+1 -57

pkgs/top-level/impure.nix

···

       7
       7
        
       

     

       8
       8
        
         homeDir = builtins.getEnv "HOME";

     

       9
       9
        
       

     

       10
       10
       -
         # Return ‘x’ if it evaluates, or ‘def’ if it throws an exception.

     

       11
       11
       -
         try =

     

       12
       12
       -
           x: def:

     

       13
       13
       -
           let

     

       14
       14
       -
             res = builtins.tryEval x;

     

       15
       15
       -
           in

     

       16
       16
       -
           if res.success then res.value else def;

     

       17
       17
       -
       

     

       18
       10
        
       in

     

       19
       11
        
       

     

       20
       12
        
       {

     
···

       50
       42
        
         # Overlays are used to extend Nixpkgs collection with additional

     

       51
       43
        
         # collections of packages.  These collection of packages are part of the

     

       52
       44
        
         # fix-point made by Nixpkgs.

     

       53
       53
       -
         overlays ?

     

       54
       54
       -
           let

     

       55
       55
       -
             isDir = path: builtins.pathExists (path + "/.");

     

       56
       56
       -
             pathOverlays = try (toString <nixpkgs-overlays>) "";

     

       57
       57
       -
             homeOverlaysFile = homeDir + "/.config/nixpkgs/overlays.nix";

     

       58
       58
       -
             homeOverlaysDir = homeDir + "/.config/nixpkgs/overlays";

     

       59
       59
       -
             overlays =

     

       60
       60
       -
               path:

     

       61
       61
       -
               # check if the path is a directory or a file

     

       62
       62
       -
               if isDir path then

     

       63
       63
       -
                 # it's a directory, so the set of overlays from the directory, ordered lexicographically

     

       64
       64
       -
                 let

     

       65
       65
       -
                   content = builtins.readDir path;

     

       66
       66
       -
                 in

     

       67
       67
       -
                 map (n: import (path + ("/" + n))) (

     

       68
       68
       -
                   builtins.filter (

     

       69
       69
       -
                     n:

     

       70
       70
       -
                     (

     

       71
       71
       -
                       builtins.match ".*\\.nix" n != null

     

       72
       72
       -
                       &&

     

       73
       73
       -
                         # ignore Emacs lock files (.#foo.nix)

     

       74
       74
       -
                         builtins.match "\\.#.*" n == null

     

       75
       75
       -
                     )

     

       76
       76
       -
                     || builtins.pathExists (path + ("/" + n + "/default.nix"))

     

       77
       77
       -
                   ) (builtins.attrNames content)

     

       78
       78
       -
                 )

     

       79
       79
       -
               else

     

       80
       80
       -
                 # it's a file, so the result is the contents of the file itself

     

       81
       81
       -
                 import path;

     

       82
       82
       -
           in

     

       83
       83
       -
           if pathOverlays != "" && builtins.pathExists pathOverlays then

     

       84
       84
       -
             overlays pathOverlays

     

       85
       85
       -
           else if builtins.pathExists homeOverlaysFile && builtins.pathExists homeOverlaysDir then

     

       86
       86
       -
             throw ''

     

       87
       87
       -
               Nixpkgs overlays can be specified with ${homeOverlaysFile} or ${homeOverlaysDir}, but not both.

     

       88
       88
       -
               Please remove one of them and try again.

     

       89
       89
       -
             ''

     

       90
       90
       -
           else if builtins.pathExists homeOverlaysFile then

     

       91
       91
       -
             if isDir homeOverlaysFile then

     

       92
       92
       -
               throw (homeOverlaysFile + " should be a file")

     

       93
       93
       -
             else

     

       94
       94
       -
               overlays homeOverlaysFile

     

       95
       95
       -
           else if builtins.pathExists homeOverlaysDir then

     

       96
       96
       -
             if !(isDir homeOverlaysDir) then

     

       97
       97
       -
               throw (homeOverlaysDir + " should be a directory")

     

       98
       98
       -
             else

     

       99
       99
       -
               overlays homeOverlaysDir

     

       100
       100
       -
           else

     

       101
       101
       -
             [ ],

     

       45
       45
       +
         overlays ? import ./impure-overlays.nix,

     

       102
       46
        
       

     

       103
       47
        
         crossOverlays ? [ ],

     

       104
       48