fix build

Signed-off-by: Christine Dodrill <me@christine.website>

nix/sources.json

@@ -5,10 +5,10 @@
         "homepage": "",
         "owner": "justinwoo",
         "repo": "easy-dhall-nix",
-        "rev": "288ee825c326f352a5db194a024bd3e1f2f735b2",
+        "rev": "1f6eecab5c276a59858a10bbfcbbc5611187da03",
-        "sha256": "12v4ql1nm1famz8r80k1xkkdgj7285vy2vn16iili0qwvz3i98ah",
+        "sha256": "07n7y93xfiwr82yx2v8r5mxcafsxgs1hdl1ghq6xah5v827fb6q0",
         "type": "tarball",
-        "url": "https://github.com/justinwoo/easy-dhall-nix/archive/288ee825c326f352a5db194a024bd3e1f2f735b2.tar.gz",
+        "url": "https://github.com/justinwoo/easy-dhall-nix/archive/1f6eecab5c276a59858a10bbfcbbc5611187da03.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "naersk": {
@@ -17,10 +17,10 @@
         "homepage": "",
         "owner": "nmattia",
         "repo": "naersk",
-        "rev": "a82fd7dc31a58c462b6dfa9d9d886fa2cc75dfd4",
+        "rev": "4f7426c362809e472d03c369d3674317c32b6863",
-        "sha256": "00bjwir52y6jbf0b22qy9qxramw35k5fc7kp9hymr1zgpmw9kbwg",
+        "sha256": "1c0f2c4gkfmrpykmk25ck8x17nq7l14di8vvxlibbigzy5jacdaf",
         "type": "tarball",
-        "url": "https://github.com/nmattia/naersk/archive/a82fd7dc31a58c462b6dfa9d9d886fa2cc75dfd4.tar.gz",
+        "url": "https://github.com/nmattia/naersk/archive/4f7426c362809e472d03c369d3674317c32b6863.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "niv": {
@@ -29,10 +29,10 @@
         "homepage": "https://github.com/nmattia/niv",
         "owner": "nmattia",
         "repo": "niv",
-        "rev": "f73bf8d584148677b01859677a63191c31911eae",
+        "rev": "527494090f7075ed5e3aa15ef7093846e5e25d52",
-        "sha256": "0jlmrx633jvqrqlyhlzpvdrnim128gc81q5psz2lpp2af8p8q9qs",
+        "sha256": "1hahf0i0iix1iyzaaq5a7rbgyfm3xjcfl69lm1b5mas1p8vdimih",
         "type": "tarball",
-        "url": "https://github.com/nmattia/niv/archive/f73bf8d584148677b01859677a63191c31911eae.tar.gz",
+        "url": "https://github.com/nmattia/niv/archive/527494090f7075ed5e3aa15ef7093846e5e25d52.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "nixpkgs": {
@@ -41,10 +41,10 @@
         "homepage": "https://github.com/NixOS/nixpkgs",
         "owner": "NixOS",
         "repo": "nixpkgs-channels",
-        "rev": "2676464121007b3fde6d96d0d5a843e42f1f6adb",
+        "rev": "502845c3e31ef3de0e424f3fcb09217df2ce6df6",
-        "sha256": "0mzcazkgnpini5lflmdn1pp05i6h3jbxlj5fs6j48mfv1z5qglb8",
+        "sha256": "0fcqpsy6y7dgn0y0wgpa56gsg0b0p8avlpjrd79fp4mp9bl18nda",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs-channels/archive/2676464121007b3fde6d96d0d5a843e42f1f6adb.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs-channels/archive/502845c3e31ef3de0e424f3fcb09217df2ce6df6.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     }
 }

nix/sources.nix

@@ -6,52 +6,63 @@ let
   # The fetchers. fetch_<type> fetches specs of type <type>.
   #
 
-  fetch_file = pkgs: spec:
+  fetch_file = pkgs: name: spec:
-    if spec.builtin or true then
+    let
-      builtins_fetchurl { inherit (spec) url sha256; }
+      name' = sanitizeName name + "-src";
-    else
+    in
-      pkgs.fetchurl { inherit (spec) url sha256; };
+      if spec.builtin or true then
+        builtins_fetchurl { inherit (spec) url sha256; name = name'; }
+      else
+        pkgs.fetchurl { inherit (spec) url sha256; name = name'; };
 
-  fetch_tarball = pkgs: spec:
+  fetch_tarball = pkgs: name: spec:
-    if spec.builtin or true then
+    let
-      builtins_fetchTarball { inherit (spec) url sha256; }
+      name' = sanitizeName name + "-src";
-    else
+    in
-      pkgs.fetchzip { inherit (spec) url sha256; };
+      if spec.builtin or true then
+        builtins_fetchTarball { name = name'; inherit (spec) url sha256; }
+      else
+        pkgs.fetchzip { name = name'; inherit (spec) url sha256; };
 
-  fetch_git = spec:
+  fetch_git = name: spec:
-    builtins.fetchGit { url = spec.repo; inherit (spec) rev ref; };
+    let
+      ref =
+        if spec ? ref then spec.ref else
+          if spec ? branch then "refs/heads/${spec.branch}" else
+            if spec ? tag then "refs/tags/${spec.tag}" else
+              abort "In git source '${name}': Please specify `ref`, `tag` or `branch`!";
+    in
+      builtins.fetchGit { url = spec.repo; inherit (spec) rev; inherit ref; };
 
-  fetch_builtin-tarball = spec:
+  fetch_local = spec: spec.path;
-    builtins.trace
-      ''
-        WARNING:
-          The niv type "builtin-tarball" will soon be deprecated. You should
-          instead use `builtin = true`.
 
-          $ niv modify <package> -a type=tarball -a builtin=true
+  fetch_builtin-tarball = name: throw
-      ''
+    ''[${name}] The niv type "builtin-tarball" is deprecated. You should instead use `builtin = true`.
-      builtins_fetchTarball { inherit (spec) url sha256; };
+        $ niv modify ${name} -a type=tarball -a builtin=true'';
 
-  fetch_builtin-url = spec:
+  fetch_builtin-url = name: throw
-    builtins.trace
+    ''[${name}] The niv type "builtin-url" will soon be deprecated. You should instead use `builtin = true`.
-      ''
+        $ niv modify ${name} -a type=file -a builtin=true'';
-        WARNING:
-          The niv type "builtin-url" will soon be deprecated. You should
-          instead use `builtin = true`.
-
-          $ niv modify <package> -a type=file -a builtin=true
-      ''
-      (builtins_fetchurl { inherit (spec) url sha256; });
 
   #
   # Various helpers
   #
 
+  # https://github.com/NixOS/nixpkgs/pull/83241/files#diff-c6f540a4f3bfa4b0e8b6bafd4cd54e8bR695
+  sanitizeName = name:
+    (
+      concatMapStrings (s: if builtins.isList s then "-" else s)
+        (
+          builtins.split "[^[:alnum:]+._?=-]+"
+            ((x: builtins.elemAt (builtins.match "\\.*(.*)" x) 0) name)
+        )
+    );
+
   # The set of packages used when specs are fetched using non-builtins.
-  mkPkgs = sources:
+  mkPkgs = sources: system:
     let
       sourcesNixpkgs =
-        import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) {};
+        import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) { inherit system; };
       hasNixpkgsPath = builtins.any (x: x.prefix == "nixpkgs") builtins.nixPath;
       hasThisAsNixpkgsPath = <nixpkgs> == ./.;
     in
@@ -71,14 +82,27 @@ let
 
     if ! builtins.hasAttr "type" spec then
       abort "ERROR: niv spec ${name} does not have a 'type' attribute"
-    else if spec.type == "file" then fetch_file pkgs spec
+    else if spec.type == "file" then fetch_file pkgs name spec
-    else if spec.type == "tarball" then fetch_tarball pkgs spec
+    else if spec.type == "tarball" then fetch_tarball pkgs name spec
-    else if spec.type == "git" then fetch_git spec
+    else if spec.type == "git" then fetch_git name spec
-    else if spec.type == "builtin-tarball" then fetch_builtin-tarball spec
+    else if spec.type == "local" then fetch_local spec
-    else if spec.type == "builtin-url" then fetch_builtin-url spec
+    else if spec.type == "builtin-tarball" then fetch_builtin-tarball name
+    else if spec.type == "builtin-url" then fetch_builtin-url name
     else
       abort "ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}";
 
+  # If the environment variable NIV_OVERRIDE_${name} is set, then use
+  # the path directly as opposed to the fetched source.
+  replace = name: drv:
+    let
+      saneName = stringAsChars (c: if isNull (builtins.match "[a-zA-Z0-9]" c) then "_" else c) name;
+      ersatz = builtins.getEnv "NIV_OVERRIDE_${saneName}";
+    in
+      if ersatz == "" then drv else
+        # this turns the string into an actual Nix path (for both absolute and
+        # relative paths)
+        if builtins.substring 0 1 ersatz == "/" then /. + ersatz else /. + builtins.getEnv "PWD" + "/${ersatz}";
+
   # Ports of functions for older nix versions
 
   # a Nix version of mapAttrs if the built-in doesn't exist
@@ -87,23 +111,37 @@ let
     listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set))
   );
 
+  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/lists.nix#L295
+  range = first: last: if first > last then [] else builtins.genList (n: first + n) (last - first + 1);
+
+  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L257
+  stringToCharacters = s: map (p: builtins.substring p 1 s) (range 0 (builtins.stringLength s - 1));
+
+  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L269
+  stringAsChars = f: s: concatStrings (map f (stringToCharacters s));
+  concatMapStrings = f: list: concatStrings (map f list);
+  concatStrings = builtins.concatStringsSep "";
+
+  # https://github.com/NixOS/nixpkgs/blob/8a9f58a375c401b96da862d969f66429def1d118/lib/attrsets.nix#L331
+  optionalAttrs = cond: as: if cond then as else {};
+
   # fetchTarball version that is compatible between all the versions of Nix
-  builtins_fetchTarball = { url, sha256 }@attrs:
+  builtins_fetchTarball = { url, name ? null, sha256 }@attrs:
     let
       inherit (builtins) lessThan nixVersion fetchTarball;
     in
       if lessThan nixVersion "1.12" then
-        fetchTarball { inherit url; }
+        fetchTarball ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
       else
         fetchTarball attrs;
 
   # fetchurl version that is compatible between all the versions of Nix
-  builtins_fetchurl = { url, sha256 }@attrs:
+  builtins_fetchurl = { url, name ? null, sha256 }@attrs:
     let
       inherit (builtins) lessThan nixVersion fetchurl;
     in
       if lessThan nixVersion "1.12" then
-        fetchurl { inherit url; }
+        fetchurl ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
       else
         fetchurl attrs;
 
@@ -115,14 +153,15 @@ let
         then abort
           "The values in sources.json should not have an 'outPath' attribute"
         else
-          spec // { outPath = fetch config.pkgs name spec; }
+          spec // { outPath = replace name (fetch config.pkgs name spec); }
     ) config.sources;
 
   # The "config" used by the fetchers
   mkConfig =
-    { sourcesFile ? ./sources.json
+    { sourcesFile ? if builtins.pathExists ./sources.json then ./sources.json else null
-    , sources ? builtins.fromJSON (builtins.readFile sourcesFile)
+    , sources ? if isNull sourcesFile then {} else builtins.fromJSON (builtins.readFile sourcesFile)
-    , pkgs ? mkPkgs sources
+    , system ? builtins.currentSystem
+    , pkgs ? mkPkgs sources system
     }: rec {
       # The sources, i.e. the attribute set of spec name to spec
       inherit sources;
@@ -130,5 +169,6 @@ let
       # The "pkgs" (evaluated nixpkgs) to use for e.g. non-builtin fetchers
       inherit pkgs;
     };
+
 in
 mkSources (mkConfig {}) // { __functor = _: settings: mkSources (mkConfig settings); }