Re-namespace some stuff to Omni

I was getting confused about what is a product and what is internal
infrastructure; I think it is good to keep those things separate. So I moved a
bunch of stuff to an Omni namespace, actually most stuff went there. Only things
that are explicitly external products are still in the Biz namespace.

1 files changed, 207 insertions, 0 deletions

diff --git a/Omni/Bild/Sources.nix b/Omni/Bild/Sources.nix
new file mode 100644
index 0000000..f7af81e
--- /dev/null
+++ b/Omni/Bild/Sources.nix
@@ -0,0 +1,207 @@
+# This file has been generated by Niv.
+
+let
+
+  #
+  # The fetchers. fetch_<type> fetches specs of type <type>.
+  #
+
+  fetch_file = pkgs: name: spec:
+    let name' = sanitizeName name + "-src";
+    in 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: name: spec:
+    let name' = sanitizeName name + "-src";
+    in 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 = name: spec:
+    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 '${name}': Please specify `ref`, `tag` or `branch`!";
+    in builtins.fetchGit {
+      url = spec.repo;
+      inherit (spec) rev;
+      inherit ref;
+    };
+
+  fetch_local = spec: spec.path;
+
+  fetch_builtin-tarball = name:
+    throw ''
+      [${name}] The niv type "builtin-tarball" is deprecated. You should instead use `builtin = true`.
+              $ niv modify ${name} -a type=tarball -a builtin=true'';
+
+  fetch_builtin-url = name:
+    throw ''
+      [${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'';
+
+  #
+  # 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: system:
+    let
+      sourcesNixpkgs = import
+        (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) {
+          inherit system;
+        };
+      hasNixpkgsPath = builtins.any (x: x.prefix == "nixpkgs") builtins.nixPath;
+      hasThisAsNixpkgsPath = <nixpkgs> == ./.;
+    in if builtins.hasAttr "nixpkgs" sources then
+      sourcesNixpkgs
+    else if hasNixpkgsPath && !hasThisAsNixpkgsPath then
+      import <nixpkgs> { }
+    else
+      abort ''
+        Please specify either <nixpkgs> (through -I or NIX_PATH=nixpkgs=...) or
+        add a package called "nixpkgs" to your sources.json.
+      '';
+
+  # The actual fetching function.
+  fetch = pkgs: name: spec:
+
+    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 name spec
+    else if spec.type == "tarball" then
+      fetch_tarball pkgs name spec
+    else if spec.type == "git" then
+      fetch_git name spec
+    else if spec.type == "local" then
+      fetch_local 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
+  mapAttrs = builtins.mapAttrs or (f: set:
+    with builtins;
+    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
+  # deadnix: skip
+  builtins_fetchTarball = { url, name ? null, sha256 }@attrs:
+    let inherit (builtins) lessThan nixVersion fetchTarball;
+    in if lessThan nixVersion "1.12" then
+      fetchTarball
+      ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
+    else
+      fetchTarball attrs;
+
+  # fetchurl version that is compatible between all the versions of Nix
+  # deadnix: skip
+  builtins_fetchurl = { url, name ? null, sha256 }@attrs:
+    let inherit (builtins) lessThan nixVersion fetchurl;
+    in if lessThan nixVersion "1.12" then
+      fetchurl
+      ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
+    else
+      fetchurl attrs;
+
+  # Create the final "sources" from the config
+  mkSources = config:
+    mapAttrs (name: spec:
+      if builtins.hasAttr "outPath" spec then
+        abort
+        "The values in sources.json should not have an 'outPath' attribute"
+      else
+        spec // { outPath = replace name (fetch config.pkgs name spec); })
+    config.sources;
+
+  # The "config" used by the fetchers
+  mkConfig = { sourcesFile ?
+      if builtins.pathExists ./sources.json then ./sources.json else null
+    , sources ? if isNull sourcesFile then
+      { }
+    else
+      builtins.fromJSON (builtins.readFile sourcesFile)
+    , system ? builtins.currentSystem, pkgs ? mkPkgs sources system }: rec {
+      # The sources, i.e. the attribute set of spec name to spec
+      inherit sources;
+
+      # The "pkgs" (evaluated nixpkgs) to use for e.g. non-builtin fetchers
+      inherit pkgs;
+    };
+
+in mkSources (mkConfig { }) // {
+  __functor = _: settings: mkSources (mkConfig settings);
+}