···

       
4
       
4
       
 
       
# often change with updating of git or cgit.

     

       
5
       
5
       
 
       
# stripLen acts as the -p parameter when applying a patch.

     

       
6
       
6
       
 
       


     

       
7
       
7
       
-
       
{ fetchurl, patchutils }:

     

       
8
       
8
       
-
       
{ stripLen ? 0, ... }@args:

     

       
7
       
7
       
+
       
{ lib, fetchurl, patchutils }:

     

       
8
       
8
       
+
       
{ stripLen ? 0, addPrefixes ? false, ... }@args:

     

       
9
       
9
       
 
       


     

       
10
       
10
       
 
       
fetchurl ({

     

       
11
       
11
       
 
       
  postFetch = ''

     
···

       
16
       
16
       
 
       
        "${patchutils}/bin/filterdiff" \

     

       
17
       
17
       
 
       
        --include={} \

     

       
18
       
18
       
 
       
        --strip=${toString stripLen} \

     

       
19
       
19
       
+
       
        ${lib.optionalString addPrefixes ''

     

       
20
       
20
       
+
       
           --addoldprefix=a/ \

     

       
21
       
21
       
+
       
           --addnewprefix=b/ \

     

       
22
       
22
       
+
       
        ''} \

     

       
19
       
23
       
 
       
        --clean "$out" > "$tmpfile"

     

       
20
       
24
       
 
       
    mv "$tmpfile" "$out"

     

       
21
       
25
       
 
       
    ${args.postFetch or ""}

     

       
22
       
26
       
 
       
  '';

     

       
23
       
23
       
-
       
} // builtins.removeAttrs args ["stripLen"])

     

       
27
       
27
       
+
       
} // builtins.removeAttrs args ["stripLen" "addPrefixes"])