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-rw-r--r--nix/sources.json38
-rw-r--r--nix/sources.nix148
2 files changed, 186 insertions, 0 deletions
diff --git a/nix/sources.json b/nix/sources.json
new file mode 100644
index 0000000..9047de2
--- /dev/null
+++ b/nix/sources.json
@@ -0,0 +1,38 @@
+{
+ "tcm": {
+ "branch": "develop",
+ "description": "A collaborative web application (virtual office) presented as a 16-bit RPG video game",
+ "homepage": "https://workadventu.re",
+ "owner": "thecodingmachine",
+ "repo": "workadventure",
+ "rev": "8aeaf292b37fdb7b8b900053ef4ca1f61dbd3d3a",
+ "sha256": "1j5ym84qgqnwmg40bflplddl9pn29jcnjplbnh83l72r7z045ii5",
+ "type": "tarball",
+ "url": "https://github.com/thecodingmachine/workadventure/archive/8aeaf292b37fdb7b8b900053ef4ca1f61dbd3d3a.tar.gz",
+ "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+ },
+ "xce": {
+ "branch": "xce",
+ "description": "Experimental community edition of Workadventure. We regularly rebase pull-requests onto TCM's develop branch until they are merged.",
+ "homepage": "",
+ "owner": "workadventure-xce",
+ "repo": "workadventure-xce",
+ "rev": "7bf9a644bd605c89eb81457c82614dcfc0413205",
+ "sha256": "0s4lnz4xc70hf12ggwaknz9qg7mgnmk42apyh4ms29k01j3a2ipc",
+ "type": "tarball",
+ "url": "https://github.com/workadventure-xce/workadventure/archive/7bf9a644bd605c89eb81457c82614dcfc0413205.tar.gz",
+ "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+ },
+ "xce-unfederated": {
+ "branch": "xce-unfederated",
+ "description": "Experimental community edition of Workadventure. We regularly rebase pull-requests onto TCM's develop branch until they are merged.",
+ "homepage": "",
+ "owner": "workadventure-xce",
+ "repo": "workadventure-xce",
+ "rev": "8460bbaff59c5148b41149ba49bd9a1214e0bfee",
+ "sha256": "0j6m8fl30d0bg5ki16cnwg97hkijs5042xb4jdp0lp7n8b10jmw4",
+ "type": "tarball",
+ "url": "https://github.com/workadventure-xce/workadventure-xce/archive/8460bbaff59c5148b41149ba49bd9a1214e0bfee.tar.gz",
+ "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+ }
+}
diff --git a/nix/sources.nix b/nix/sources.nix
new file mode 100644
index 0000000..b64b8f8
--- /dev/null
+++ b/nix/sources.nix
@@ -0,0 +1,148 @@
+# This file has been generated by Niv.
+
+let
+
+ #
+ # The fetchers. fetch_<type> fetches specs of type <type>.
+ #
+
+ fetch_file = pkgs: spec:
+ if spec.builtin or true then
+ builtins_fetchurl { inherit (spec) url sha256; }
+ else
+ pkgs.fetchurl { inherit (spec) url sha256; };
+
+ fetch_tarball = pkgs: name: spec:
+ let
+ ok = str: ! builtins.isNull (builtins.match "[a-zA-Z0-9+-._?=]" str);
+ # sanitize the name, though nix will still fail if name starts with period
+ name' = stringAsChars (x: if ! ok x then "-" else x) "${name}-src";
+ in
+ if spec.builtin or true then
+ builtins_fetchTarball { name = name'; inherit (spec) url sha256; }
+ else
+ pkgs.fetchzip { name = name'; inherit (spec) url sha256; };
+
+ fetch_git = spec:
+ builtins.fetchGit { url = spec.repo; inherit (spec) rev ref; };
+
+ fetch_local = spec: spec.path;
+
+ fetch_builtin-tarball = name: throw
+ ''[${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
+ #
+
+ # The set of packages used when specs are fetched using non-builtins.
+ mkPkgs = sources:
+ let
+ sourcesNixpkgs =
+ import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) {};
+ 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 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 == "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_${saneName}";
+ in
+ if ersatz == "" then drv else ersatz;
+
+ # Ports of functions for older nix versions
+
+ # a Nix version of mapAttrs if the built-in doesn't exist
+ mapAttrs = builtins.mapAttrs or (
+ f: set: with builtins;
+ listToAttrs (map (attr: { name = attr; value = f attr set.${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));
+ concatStrings = builtins.concatStringsSep "";
+
+ # fetchTarball version that is compatible between all the versions of Nix
+ builtins_fetchTarball = { url, name, sha256 }@attrs:
+ let
+ inherit (builtins) lessThan nixVersion fetchTarball;
+ in
+ if lessThan nixVersion "1.12" then
+ fetchTarball { inherit name url; }
+ else
+ fetchTarball attrs;
+
+ # fetchurl version that is compatible between all the versions of Nix
+ builtins_fetchurl = { url, sha256 }@attrs:
+ let
+ inherit (builtins) lessThan nixVersion fetchurl;
+ in
+ if lessThan nixVersion "1.12" then
+ fetchurl { inherit url; }
+ 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)
+ , pkgs ? mkPkgs sources
+ }: 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); }