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Add Nix setup

Maarten van den Berg 3 年之前
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f2cc939393
共有 5 個文件被更改,包括 260 次插入0 次删除
  1. 2 0
      .gitignore
  2. 26 0
      nix/sources.json
  3. 171 0
      nix/sources.nix
  4. 30 0
      piket_client/shell.nix
  5. 31 0
      piket_server/shell.nix

+ 2 - 0
.gitignore

@@ -7,3 +7,5 @@
7 7
 # Python egg metadata, regenerated from source files by setuptools.
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 /*.egg-info
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 /*.egg
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+
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+.mypy_cache

+ 26 - 0
nix/sources.json

@@ -0,0 +1,26 @@
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+{
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+    "niv": {
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+        "branch": "master",
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+        "description": "Easy dependency management for Nix projects",
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+        "homepage": "https://github.com/nmattia/niv",
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+        "owner": "nmattia",
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+        "repo": "niv",
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+        "rev": "e0ca65c81a2d7a4d82a189f1e23a48d59ad42070",
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+        "sha256": "1pq9nh1d8nn3xvbdny8fafzw87mj7gsmp6pxkdl65w2g18rmcmzx",
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+        "type": "tarball",
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+        "url": "https://github.com/nmattia/niv/archive/e0ca65c81a2d7a4d82a189f1e23a48d59ad42070.tar.gz",
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+        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
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+    },
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+    "nixpkgs": {
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+        "branch": "nixpkgs-unstable",
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+        "description": "Nix Packages collection",
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+        "homepage": "",
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+        "owner": "NixOS",
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+        "repo": "nixpkgs",
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+        "rev": "08ef0f28e3a41424b92ba1d203de64257a9fca6a",
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+        "sha256": "1mql1gp86bk6pfsrp0lcww6hw5civi6f8542d4nh356506jdxmcy",
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+        "type": "tarball",
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+        "url": "https://github.com/NixOS/nixpkgs/archive/08ef0f28e3a41424b92ba1d203de64257a9fca6a.tar.gz",
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+        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
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+    }
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+}

+ 171 - 0
nix/sources.nix

@@ -0,0 +1,171 @@
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+# This file has been generated by Niv.
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+
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+let
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+
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+  #
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+  # The fetchers. fetch_<type> fetches specs of type <type>.
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+  #
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+
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+  fetch_file = pkgs: name: spec:
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+    let
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+      name' = sanitizeName name + "-src";
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+    in
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+      if spec.builtin or true then
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+        builtins_fetchurl { inherit (spec) url sha256; name = name'; }
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+      else
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+        pkgs.fetchurl { inherit (spec) url sha256; name = name'; };
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+
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+  fetch_tarball = pkgs: name: spec:
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+    let
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+      name' = sanitizeName name + "-src";
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+    in
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+      if spec.builtin or true then
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+        builtins_fetchTarball { name = name'; inherit (spec) url sha256; }
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+      else
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+        pkgs.fetchzip { name = name'; inherit (spec) url sha256; };
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+
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+  fetch_git = name: spec:
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+    let
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+      ref =
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+        if spec ? ref then spec.ref else
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+          if spec ? branch then "refs/heads/${spec.branch}" else
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+            if spec ? tag then "refs/tags/${spec.tag}" else
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+              abort "In git source '${name}': Please specify `ref`, `tag` or `branch`!";
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+    in
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+      builtins.fetchGit { url = spec.repo; inherit (spec) rev; inherit ref; };
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+
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+  fetch_local = spec: spec.path;
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+
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+  fetch_builtin-tarball = name: throw
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+    ''[${name}] The niv type "builtin-tarball" is deprecated. You should instead use `builtin = true`.
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+        $ niv modify ${name} -a type=tarball -a builtin=true'';
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+
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+  fetch_builtin-url = name: throw
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+    ''[${name}] The niv type "builtin-url" will soon be deprecated. You should instead use `builtin = true`.
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+        $ niv modify ${name} -a type=file -a builtin=true'';
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+
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+  #
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+  # Various helpers
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+  #
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+
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+  # https://github.com/NixOS/nixpkgs/pull/83241/files#diff-c6f540a4f3bfa4b0e8b6bafd4cd54e8bR695
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+  sanitizeName = name:
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+    (
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+      concatMapStrings (s: if builtins.isList s then "-" else s)
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+        (
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+          builtins.split "[^[:alnum:]+._?=-]+"
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+            ((x: builtins.elemAt (builtins.match "\\.*(.*)" x) 0) name)
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+        )
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+    );
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+
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+  # The set of packages used when specs are fetched using non-builtins.
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+  mkPkgs = sources: system:
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+    let
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+      sourcesNixpkgs =
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+        import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) { inherit system; };
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+      hasNixpkgsPath = builtins.any (x: x.prefix == "nixpkgs") builtins.nixPath;
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+      hasThisAsNixpkgsPath = <nixpkgs> == ./.;
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+    in
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+      if builtins.hasAttr "nixpkgs" sources
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+      then sourcesNixpkgs
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+      else if hasNixpkgsPath && ! hasThisAsNixpkgsPath then
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+        import <nixpkgs> {}
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+      else
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+        abort
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+          ''
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+            Please specify either <nixpkgs> (through -I or NIX_PATH=nixpkgs=...) or
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+            add a package called "nixpkgs" to your sources.json.
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+          '';
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+
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+  # The actual fetching function.
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+  fetch = pkgs: name: spec:
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+
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+    if ! builtins.hasAttr "type" spec then
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+      abort "ERROR: niv spec ${name} does not have a 'type' attribute"
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+    else if spec.type == "file" then fetch_file pkgs name spec
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+    else if spec.type == "tarball" then fetch_tarball pkgs name spec
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+    else if spec.type == "git" then fetch_git name spec
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+    else if spec.type == "local" then fetch_local spec
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+    else if spec.type == "builtin-tarball" then fetch_builtin-tarball name
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+    else if spec.type == "builtin-url" then fetch_builtin-url name
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+    else
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+      abort "ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}";
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+
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+  # If the environment variable NIV_OVERRIDE_${name} is set, then use
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+  # the path directly as opposed to the fetched source.
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+  replace = name: drv:
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+    let
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+      saneName = stringAsChars (c: if isNull (builtins.match "[a-zA-Z0-9]" c) then "_" else c) name;
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+      ersatz = builtins.getEnv "NIV_OVERRIDE_${saneName}";
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+    in
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+      if ersatz == "" then drv else ersatz;
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+
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+  # Ports of functions for older nix versions
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+
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+  # a Nix version of mapAttrs if the built-in doesn't exist
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+  mapAttrs = builtins.mapAttrs or (
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+    f: set: with builtins;
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+    listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set))
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+  );
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+
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+  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/lists.nix#L295
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+  range = first: last: if first > last then [] else builtins.genList (n: first + n) (last - first + 1);
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+
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+  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L257
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+  stringToCharacters = s: map (p: builtins.substring p 1 s) (range 0 (builtins.stringLength s - 1));
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+
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+  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L269
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+  stringAsChars = f: s: concatStrings (map f (stringToCharacters s));
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+  concatMapStrings = f: list: concatStrings (map f list);
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+  concatStrings = builtins.concatStringsSep "";
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+
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+  # https://github.com/NixOS/nixpkgs/blob/8a9f58a375c401b96da862d969f66429def1d118/lib/attrsets.nix#L331
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+  optionalAttrs = cond: as: if cond then as else {};
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+
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+  # fetchTarball version that is compatible between all the versions of Nix
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+  builtins_fetchTarball = { url, name ? null, sha256 }@attrs:
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+    let
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+      inherit (builtins) lessThan nixVersion fetchTarball;
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+    in
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+      if lessThan nixVersion "1.12" then
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+        fetchTarball ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
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+      else
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+        fetchTarball attrs;
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+
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+  # fetchurl version that is compatible between all the versions of Nix
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+  builtins_fetchurl = { url, name ? null, sha256 }@attrs:
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+    let
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+      inherit (builtins) lessThan nixVersion fetchurl;
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+    in
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+      if lessThan nixVersion "1.12" then
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+        fetchurl ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
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+      else
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+        fetchurl attrs;
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+
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+  # Create the final "sources" from the config
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+  mkSources = config:
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+    mapAttrs (
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+      name: spec:
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+        if builtins.hasAttr "outPath" spec
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+        then abort
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+          "The values in sources.json should not have an 'outPath' attribute"
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+        else
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+          spec // { outPath = replace name (fetch config.pkgs name spec); }
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+    ) config.sources;
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+
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+  # The "config" used by the fetchers
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+  mkConfig =
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+    { sourcesFile ? if builtins.pathExists ./sources.json then ./sources.json else null
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+    , sources ? if isNull sourcesFile then {} else builtins.fromJSON (builtins.readFile sourcesFile)
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+    , system ? builtins.currentSystem
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+    , pkgs ? mkPkgs sources system
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+    }: rec {
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+      # The sources, i.e. the attribute set of spec name to spec
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+      inherit sources;
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+
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+      # The "pkgs" (evaluated nixpkgs) to use for e.g. non-builtin fetchers
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+      inherit pkgs;
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+    };
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+
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+in
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+mkSources (mkConfig {}) // { __functor = _: settings: mkSources (mkConfig settings); }

+ 30 - 0
piket_client/shell.nix

@@ -0,0 +1,30 @@
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+let
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+  sources = import ../nix/sources.nix {};
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+  pkgs = import sources.nixpkgs {};
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+
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+  pythonEnv = pkgs.python3.withPackages (pkgs: with pkgs; [
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+    black
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+    mypy
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+
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+    pyside2
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+    qdarkstyle
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+    requests
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+    simpleaudio
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+    dbus-python
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+
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+    raven
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+  ]);
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+
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+in
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+  pkgs.mkShell {
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+    name = "piket-client-shell";
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+    packages = [
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+      pythonEnv
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+    ];
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+
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+    shellHook = with pkgs; ''
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+      export QT_QPA_PLATFORM_PLUGIN_PATH="${qt5.qtbase.bin}/lib/qt-${qt5.qtbase.version}/plugins";
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+      export PYTHONPATH=..
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+    '';
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+  }
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+

+ 31 - 0
piket_server/shell.nix

@@ -0,0 +1,31 @@
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+let
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+  sources = import ../nix/sources.nix {};
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+  pkgs = import sources.nixpkgs {};
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+
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+  pythonEnv = pkgs.python3.withPackages (ps: with ps; [
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+    black
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+    mypy
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+
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+    flask
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+    sqlalchemy
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+    flask_sqlalchemy
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+    alembic
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+
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+    requests
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+
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+    raven
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+  ]);
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+
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+in
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+  pkgs.mkShell {
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+    name = "piket-server-shell";
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+    packages = [
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+      pythonEnv
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+      pkgs.uwsgi
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+    ];
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+
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+    shellHook = ''
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+      export PYTHONPATH=..
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+      export FLASK_APP=piket_server
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+    '';
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+  }