66 # The fetchers. fetch_<type> fetches specs of type <type>.
77 #
88
9- fetch_file = pkgs : spec :
10- if spec . builtin or true then
11- builtins_fetchurl { inherit ( spec ) url sha256 ; }
12- else
13- pkgs . fetchurl { inherit ( spec ) url sha256 ; } ;
14-
15- fetch_tarball = pkgs : spec :
16- if spec . builtin or true then
17- builtins_fetchTarball { inherit ( spec ) url sha256 ; }
18- else
19- pkgs . fetchzip { inherit ( spec ) url sha256 ; } ;
9+ fetch_file = pkgs : name : spec :
10+ let
11+ name' = sanitizeName name + "-src" ;
12+ in
13+ if spec . builtin or true then
14+ builtins_fetchurl { inherit ( spec ) url sha256 ; name = name' ; }
15+ else
16+ pkgs . fetchurl { inherit ( spec ) url sha256 ; name = name' ; } ;
2017
21- fetch_git = spec :
22- builtins . fetchGit { url = spec . repo ; inherit ( spec ) rev ref ; } ;
18+ fetch_tarball = pkgs : name : spec :
19+ let
20+ name' = sanitizeName name + "-src" ;
21+ in
22+ if spec . builtin or true then
23+ builtins_fetchTarball { name = name' ; inherit ( spec ) url sha256 ; }
24+ else
25+ pkgs . fetchzip { name = name' ; inherit ( spec ) url sha256 ; } ;
2326
24- fetch_builtin-tarball = spec :
25- builtins . trace
26- ''
27- WARNING:
28- The niv type "builtin-tarball" will soon be deprecated. You should
29- instead use `builtin = true`.
27+ fetch_git = name : spec :
28+ let
29+ ref =
30+ if spec ? ref then spec . ref else
31+ if spec ? branch then "refs/heads/${ spec . branch } " else
32+ if spec ? tag then "refs/tags/${ spec . tag } " else
33+ abort "In git source '${ name } ': Please specify `ref`, `tag` or `branch`!" ;
34+ in
35+ builtins . fetchGit { url = spec . repo ; inherit ( spec ) rev ; inherit ref ; } ;
3036
31- $ niv modify <package> -a type=tarball -a builtin=true
32- ''
33- builtins_fetchTarball { inherit ( spec ) url sha256 ; } ;
37+ fetch_local = spec : spec . path ;
3438
35- fetch_builtin-url = spec :
36- builtins . trace
37- ''
38- WARNING:
39- The niv type "builtin-url" will soon be deprecated. You should
40- instead use `builtin = true`.
39+ fetch_builtin-tarball = name : throw
40+ ''[${ name } ] The niv type "builtin-tarball" is deprecated. You should instead use `builtin = true`.
41+ $ niv modify ${ name } -a type=tarball -a builtin=true'' ;
4142
42- $ niv modify <package> -a type=file -a builtin=true
43- ''
44- ( builtins_fetchurl { inherit ( spec ) url sha256 ; } ) ;
43+ fetch_builtin-url = name : throw
44+ ''[ ${ name } ] The niv type "builtin-url" will soon be deprecated. You should instead use `builtin = true`.
45+ $ niv modify ${ name } -a type=file -a builtin=true'' ;
4546
4647 #
4748 # Various helpers
4849 #
4950
51+ # https://github.com/NixOS/nixpkgs/pull/83241/files#diff-c6f540a4f3bfa4b0e8b6bafd4cd54e8bR695
52+ sanitizeName = name :
53+ (
54+ concatMapStrings ( s : if builtins . isList s then "-" else s )
55+ (
56+ builtins . split "[^[:alnum:]+._?=-]+"
57+ ( ( x : builtins . elemAt ( builtins . match "\\ .*(.*)" x ) 0 ) name )
58+ )
59+ ) ;
60+
5061 # The set of packages used when specs are fetched using non-builtins.
51- mkPkgs = sources :
62+ mkPkgs = sources : system :
5263 let
5364 sourcesNixpkgs =
54- import ( builtins_fetchTarball { inherit ( sources . nixpkgs ) url sha256 ; } ) { } ;
65+ import ( builtins_fetchTarball { inherit ( sources . nixpkgs ) url sha256 ; } ) { inherit system ; } ;
5566 hasNixpkgsPath = builtins . any ( x : x . prefix == "nixpkgs" ) builtins . nixPath ;
5667 hasThisAsNixpkgsPath = <nixpkgs> == ./. ;
5768 in
7182
7283 if ! builtins . hasAttr "type" spec then
7384 abort "ERROR: niv spec ${ name } does not have a 'type' attribute"
74- else if spec . type == "file" then fetch_file pkgs spec
75- else if spec . type == "tarball" then fetch_tarball pkgs spec
76- else if spec . type == "git" then fetch_git spec
77- else if spec . type == "builtin-tarball" then fetch_builtin-tarball spec
78- else if spec . type == "builtin-url" then fetch_builtin-url spec
85+ else if spec . type == "file" then fetch_file pkgs name spec
86+ else if spec . type == "tarball" then fetch_tarball pkgs name spec
87+ else if spec . type == "git" then fetch_git name spec
88+ else if spec . type == "local" then fetch_local spec
89+ else if spec . type == "builtin-tarball" then fetch_builtin-tarball name
90+ else if spec . type == "builtin-url" then fetch_builtin-url name
7991 else
8092 abort "ERROR: niv spec ${ name } has unknown type ${ builtins . toJSON spec . type } " ;
8193
94+ # If the environment variable NIV_OVERRIDE_${name} is set, then use
95+ # the path directly as opposed to the fetched source.
96+ replace = name : drv :
97+ let
98+ saneName = stringAsChars ( c : if isNull ( builtins . match "[a-zA-Z0-9]" c ) then "_" else c ) name ;
99+ ersatz = builtins . getEnv "NIV_OVERRIDE_${ saneName } " ;
100+ in
101+ if ersatz == "" then drv else
102+ # this turns the string into an actual Nix path (for both absolute and
103+ # relative paths)
104+ if builtins . substring 0 1 ersatz == "/" then /. + ersatz else /. + builtins . getEnv "PWD" + "/${ ersatz } " ;
105+
82106 # Ports of functions for older nix versions
83107
84108 # a Nix version of mapAttrs if the built-in doesn't exist
87111 listToAttrs ( map ( attr : { name = attr ; value = f attr set . ${ attr } ; } ) ( attrNames set ) )
88112 ) ;
89113
114+ # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/lists.nix#L295
115+ range = first : last : if first > last then [ ] else builtins . genList ( n : first + n ) ( last - first + 1 ) ;
116+
117+ # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L257
118+ stringToCharacters = s : map ( p : builtins . substring p 1 s ) ( range 0 ( builtins . stringLength s - 1 ) ) ;
119+
120+ # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L269
121+ stringAsChars = f : s : concatStrings ( map f ( stringToCharacters s ) ) ;
122+ concatMapStrings = f : list : concatStrings ( map f list ) ;
123+ concatStrings = builtins . concatStringsSep "" ;
124+
125+ # https://github.com/NixOS/nixpkgs/blob/8a9f58a375c401b96da862d969f66429def1d118/lib/attrsets.nix#L331
126+ optionalAttrs = cond : as : if cond then as else { } ;
127+
90128 # fetchTarball version that is compatible between all the versions of Nix
91- builtins_fetchTarball = { url , sha256 } @attrs :
129+ builtins_fetchTarball = { url , name ? null , sha256 } @attrs :
92130 let
93131 inherit ( builtins ) lessThan nixVersion fetchTarball ;
94132 in
95133 if lessThan nixVersion "1.12" then
96- fetchTarball { inherit url ; }
134+ fetchTarball ( { inherit url ; } // ( optionalAttrs ( ! isNull name ) { inherit name ; } ) )
97135 else
98136 fetchTarball attrs ;
99137
100138 # fetchurl version that is compatible between all the versions of Nix
101- builtins_fetchurl = { url , sha256 } @attrs :
139+ builtins_fetchurl = { url , name ? null , sha256 } @attrs :
102140 let
103141 inherit ( builtins ) lessThan nixVersion fetchurl ;
104142 in
105143 if lessThan nixVersion "1.12" then
106- fetchurl { inherit url ; }
144+ fetchurl ( { inherit url ; } // ( optionalAttrs ( ! isNull name ) { inherit name ; } ) )
107145 else
108146 fetchurl attrs ;
109147
@@ -115,20 +153,22 @@ let
115153 then abort
116154 "The values in sources.json should not have an 'outPath' attribute"
117155 else
118- spec // { outPath = fetch config . pkgs name spec ; }
156+ spec // { outPath = replace name ( fetch config . pkgs name spec ) ; }
119157 ) config . sources ;
120158
121159 # The "config" used by the fetchers
122160 mkConfig =
123- { sourcesFile ? ./sources.json
124- , sources ? builtins . fromJSON ( builtins . readFile sourcesFile )
125- , pkgs ? mkPkgs sources
161+ { sourcesFile ? if builtins . pathExists ./sources.json then ./sources.json else null
162+ , sources ? if isNull sourcesFile then { } else builtins . fromJSON ( builtins . readFile sourcesFile )
163+ , system ? builtins . currentSystem
164+ , pkgs ? mkPkgs sources system
126165 } : rec {
127166 # The sources, i.e. the attribute set of spec name to spec
128167 inherit sources ;
129168
130169 # The "pkgs" (evaluated nixpkgs) to use for e.g. non-builtin fetchers
131170 inherit pkgs ;
132171 } ;
172+
133173in
134174mkSources ( mkConfig { } ) // { __functor = _ : settings : mkSources ( mkConfig settings ) ; }
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