patch of WIP · round #0 · pull #1 · isabelroses.com/fetch-tangled

+117 -103
fetcher.nix
···

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       {

     

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         lib,

     

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         repoRevToNameMaybe,

     

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         stdenvNoCC,

     

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         fetchgit,

     

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         fetchzip,

     

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       }:

     

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       lib.makeOverridable (

     

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         {

     

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           domain ? "tangled.sh",

     

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           owner,

     

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           repo,

     

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           rev ? null,

     

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           tag ? null,

     

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           name ? repoRevToNameMaybe repo (lib.revOrTag rev tag) "tangled",

     

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       -
       

     

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           # fetchgit stuff

     

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           fetchSubmodules ? false,

     

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           leaveDotGit ? false,

     

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           deepClone ? false,

     

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           forceFetchGit ? false,

     

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           fetchLFS ? false,

     

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           sparseCheckout ? [ ],

     

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       -
       

     

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           meta ? { },

     

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           ...

     

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         }@args:

     

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       -
       

     

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         assert lib.assertMsg (lib.xor (tag != null) (

     

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           rev != null

     

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         )) "fetchFromTangled requires one of either `rev` or `tag` to be provided (not both).";

     

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       -
       

     

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         let

     

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       -
       

     

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           position = (

     

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             if args.meta.description or null != null then

     

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               builtins.unsafeGetAttrPos "description" args.meta

     

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             else if tag != null then

     

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               builtins.unsafeGetAttrPos "tag" args

     

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             else

     

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               builtins.unsafeGetAttrPos "rev" args

     

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           );

     

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       -
       

     

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           baseUrl = "https://${domain}/${owner}/${repo}";

     

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       -
       

     

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           newMeta =

     

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             meta

     

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             // {

     

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               homepage = meta.homepage or baseUrl;

     

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             }

     

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             // lib.optionalAttrs (position != null) {

     

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               # to indicate where derivation originates, similar to make-derivation.nix's mkDerivation

     

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               position = "${position.file}:${toString position.line}";

     

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             };

     

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         lib.extendMkDerivation {

     

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           constructDrv = stdenvNoCC.mkDerivation;

     

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       +
       

     

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           excludeDrvArgNames = [

     

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             # Additional stdenv.mkDerivation arguments from derived fetchers.

     

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             "derivationArgs"

     

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           passthruAttrs = removeAttrs args [

     

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             "domain"

     

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             "owner"

     

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             "repo"

     

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             "tag"

     

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             "rev"

     

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             "fetchSubmodules"

     

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             "forceFetchGit"

     

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             "hash"

     

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           ];

     

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       -
           useFetchGit =

     

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             fetchSubmodules || leaveDotGit || deepClone || forceFetchGit || fetchLFS || (sparseCheckout != [ ]);

     

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       -
       

     

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           # We prefer fetchzip in cases we don't need submodules as the hash

     

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           # is more stable in that case.

     

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           fetcher =

     

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             if useFetchGit then

     

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               fetchgit

     

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             # fetchzip may not be overridable when using external tools, for example nix-prefetch

     

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             else if fetchzip ? override then

     

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               fetchzip.override { withUnzip = false; }

     

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             else

     

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               fetchzip;

     

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           revWithTag = if tag != null then "refs%2Ftags%2F${tag}" else rev;

     

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       -
       

     

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           fetcherArgs =

     

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             (

     

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               if useFetchGit then

     

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                 {

     

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                   inherit

     

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                     tag

     

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                     rev

     

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                     deepClone

     

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                     fetchSubmodules

     

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                     sparseCheckout

     

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                     fetchLFS

     

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                     leaveDotGit

     

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                     ;

     

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                   url = baseUrl;

     

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           extendDrvArgs =

     

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             finalAttrs:

     

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             {

     

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               domain ? "tangled.sh",

     

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               owner,

     

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               repo,

     

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               rev ? null,

     

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               tag ? null,

     

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               name ? repoRevToNameMaybe repo (lib.revOrTag rev tag) "tangled",

     

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       +
       

     

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               # fetchgit stuff

     

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               fetchSubmodules ? false,

     

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               leaveDotGit ? false,

     

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               deepClone ? false,

     

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               forceFetchGit ? false,

     

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               fetchLFS ? false,

     

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               sparseCheckout ? [ ],

     

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               meta ? { },

     

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               ...

     

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             }@args:

     

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             assert lib.assertMsg (lib.xor (tag != null) (

     

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               rev != null

     

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             )) "fetchFromTangled requires one of either `rev` or `tag` to be provided (not both).";

     

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             let

     

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       +
       

     

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               position = (

     

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                 if args.meta.description or null != null then

     

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                   builtins.unsafeGetAttrPos "description" args.meta

     

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                 else if tag != null then

     

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                   builtins.unsafeGetAttrPos "tag" args

     

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                 else

     

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                   builtins.unsafeGetAttrPos "rev" args

     

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               );

     

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               baseUrl = "https://${domain}/${owner}/${repo}";

     

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               newMeta =

     

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                 meta

     

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                 // {

     

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                   homepage = meta.homepage or baseUrl;

     

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                 }

     

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               else

     

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                 {

     

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                   url = "${baseUrl}/archive/${revWithTag}";

     

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                   extension = "tar.gz";

     

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                   passthru = {

     

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                     gitRepoUrl = baseUrl;

     

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                   };

     

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                 }

     

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             )

     

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             // passthruAttrs

     

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                 // lib.optionalAttrs (position != null) {

     

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                   # to indicate where derivation originates, similar to make-derivation.nix's mkDerivation

     

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                   position = "${position.file}:${toString position.line}";

     

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                 };

     

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       +
       

     

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               passthruAttrs = removeAttrs args [

     

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                 "domain"

     

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                 "owner"

     

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                 "repo"

     

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                 "tag"

     

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                 "rev"

     

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                 "fetchSubmodules"

     

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                 "forceFetchGit"

     

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               ];

     

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       +
       

     

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               useFetchGit =

     

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                 fetchSubmodules || leaveDotGit || deepClone || forceFetchGit || fetchLFS || (sparseCheckout != [ ]);

     

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               # We prefer fetchzip in cases we don't need submodules as the hash

     

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               # is more stable in that case.

     

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               fetcher =

     

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                 if useFetchGit then

     

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                   fetchgit

     

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                 # fetchzip may not be overridable when using external tools, for example nix-prefetch

     

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                 else if fetchzip ? override then

     

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                   fetchzip.override { withUnzip = false; }

     

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                 else

     

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                   fetchzip;

     

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               revWithTag = if tag != null then "refs%2Ftags%2F${tag}" else rev;

     

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               fetcherArgs =

     

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                 (

     

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                   if useFetchGit then

     

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                     {

     

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                       inherit

     

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                         tag

     

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                         rev

     

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                         deepClone

     

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                         fetchSubmodules

     

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                         sparseCheckout

     

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                         fetchLFS

     

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                         leaveDotGit

     

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                         ;

     

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                       url = baseUrl;

     

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                     }

     

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                   else

     

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                     {

     

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                       url = "${baseUrl}/archive/${revWithTag}";

     

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                       extension = "tar.gz";

     

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                       passthru = {

     

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                         gitRepoUrl = baseUrl;

     

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                       };

     

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                     }

     

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                 )

     

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                 // passthruAttrs

     

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                 // {

     

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                   inherit name;

     

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                 };

     

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             in

     

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             fetcher fetcherArgs

     

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             // {

     

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               inherit name;

     

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               meta = newMeta;

     

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               inherit owner repo tag;

     

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               rev = revWithTag;

     

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             };

     

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         in

     

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       -
       

     

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         fetcher fetcherArgs

     

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         // {

     

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           meta = newMeta;

     

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           inherit owner repo tag;

     

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           rev = revWithTag;

     

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         }

     

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       )