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minimal working state

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This commit is contained in:
do butterflies cry? 2026-03-17 20:37:59 +10:00
parent 855430ef16
commit 6c1a0a5d33
Signed by: cry
GPG key ID: F68745A836CA0412
26 changed files with 331 additions and 326 deletions
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14
nix/snow/flake/default.nix
View file

@ -1,4 +1,5 @@
{
self,
this,
inputs,
systems,
@ -16,14 +17,20 @@
inherit (inputs.nixpkgs) lib;
in {
# snow.flake
# XXX: TODO: stop taking in root as parameter (maybe take self instead?)
flake = flakeInputs: root: let
snowflake = lib.evalModules {
class = "snowflake";
specialArgs = let
reservedSpecialArgs = {
inherit (this) snow;
# inherit (this) snow;
snow = this;
inherit systems root;
inputs = flakeInputs;
_snowFlake = {
inherit self inputs;
};
};
warnIfReserved = let
@ -50,7 +57,10 @@ in {
flakeInputs // reservedSpecialArgs;
modules = [
./module.nix
./nodes
./modules
./outputs
(this.lib.findImport /${root}/snow)
];
};
in

24
nix/snow/flake/module.nix
View file

@ -1,24 +0,0 @@
# Copyright 2025-2026 _cry64 (Emile Clark-Boman)
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
{
root,
snow,
...
}: {
imports = [
./nodes
./modules
(snow.findImport /${root}/snow)
];
}

2
nix/snow/flake/modules/apps.nix
View file

@ -10,7 +10,7 @@
;
inherit
(snow)
(snow.lib)
mkPerSystemFlakeOutput
;

2
nix/snow/flake/modules/checks.nix
View file

@ -9,7 +9,7 @@
types
;
inherit
(snow)
(snow.lib)
mkPerSystemFlakeOutput
;
in

2
nix/snow/flake/modules/devShells.nix
View file

@ -10,7 +10,7 @@
literalExpression
;
inherit
(snow)
(snow.lib)
mkPerSystemFlakeOutput
;
in

2
nix/snow/flake/modules/formatter.nix
View file

@ -9,7 +9,7 @@
types
;
inherit
(snow)
(snow.lib)
mkPerSystemFlakeOutput
;
in

2
nix/snow/flake/modules/legacyPackages.nix
View file

@ -9,7 +9,7 @@
types
;
inherit
(snow)
(snow.lib)
mkPerSystemFlakeOutput
;
in

61
nix/snow/flake/modules/outputs.nix
View file

@ -8,38 +8,39 @@
mkOption
types
;
outputs = mkOption {
type = types.submoduleWith {
modules = [
{
freeformType =
types.lazyAttrsOf
(types.unique
{
message = ''
No option has been declared for this flake output attribute, so its definitions can't be merged automatically.
Possible solutions:
- Load a module that defines this flake output attribute
- Declare an option for this flake output attribute
- Make sure the output attribute is spelled correctly
- Define the value only once, with a single definition in a single module
'';
}
types.raw);
}
];
};
description = ''
Raw flake output attributes. Any attribute can be set here, but some
attributes are represented by options, to provide appropriate
configuration merging.
'';
};
in {
options = {
inherit outputs;
outputs = mkOption {
type = types.submoduleWith {
modules = [
{
freeformType =
types.lazyAttrsOf
(types.unique
{
message = ''
No option has been declared for this flake output attribute, so its definitions can't be merged automatically.
Possible solutions:
- Load a module that defines this flake output attribute
- Declare an option for this flake output attribute
- Make sure the output attribute is spelled correctly
- Define the value only once, with a single definition in a single module
'';
}
types.raw);
}
];
};
description = ''
Raw flake output attributes. Any attribute can be set here, but some
attributes are represented by options, to provide appropriate
configuration merging.
'';
};
};
config = {inherit (config) flake;};
config = {
# ensure a minimal version is set
outputs = {};
};
}

2
nix/snow/flake/modules/packages.nix
View file

@ -10,7 +10,7 @@
;
inherit
(snow)
(snow.lib)
mkPerSystemFlakeOutput
;
in

4
nix/snow/flake/nodes/default.nix
View file

@ -12,7 +12,7 @@
# See the License for the specific language governing permissions and
# limitations under the License.
{
_snow,
_snowFlake,
lib,
specialArgs,
...
@ -39,7 +39,7 @@
config = {
nodes = {
base = _snow.inputs.nixpkgs;
base = _snowFlake.inputs.nixpkgs;
};
};
}

73
nix/snow/flake/nodes/groups.nix
View file

@ -1,73 +0,0 @@
# # Copyright 2025-2026 _cry64 (Emile Clark-Boman)
# #
# # Licensed under the Apache License, Version 2.0 (the "License");
# # you may not use this file except in compliance with the License.
# # You may obtain a copy of the License at
# #
# # http://www.apache.org/licenses/LICENSE-2.0
# #
# # Unless required by applicable law or agreed to in writing, software
# # distributed under the License is distributed on an "AS IS" BASIS,
# # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# # See the License for the specific language governing permissions and
# # limitations under the License.
{nt, ...}: let
inherit
(builtins)
concatLists
elem
filter
isAttrs
mapAttrs
pathExists
typeOf
;
rootGroupName = "all";
in {
parseGroupsDecl = groups: let
validGroup = g:
isAttrs g
|| throw ''
Snow node groups must be provided as attribute sets, got "${typeOf g}" instead!
Ensure all the group definitions are attribute sets under your call to `snow.flake`.
NOTE: Groups can be accessed via `self.groups.PATH.TO.YOUR.GROUP`
'';
delegate = parent: gName: g: let
result =
(g
// {
_name = gName;
_parent = parent;
})
|> mapAttrs (name: value:
if elem name ["_name" "_parent"]
# ignore metadata fields
then value
else assert validGroup value; (delegate result name value));
in
result;
in
assert validGroup groups;
delegate null rootGroupName groups;
getGroupModules = root: groups:
# ensure root group is always added
groups
# add all inherited groups via _parent
|> map (let
delegate = g:
if g._parent == null
then [g]
else [g] ++ delegate (g._parent);
in
delegate)
# flatten recursion result
|> concatLists
# find import location
|> map (group: nt.findImport /${root}/groups/${group._name})
# filter by uniqueness
|> nt.prim.unique
# ignore missing groups
|> filter pathExists;
}

62
nix/snow/flake/nodes/node.nix
View file

@ -14,8 +14,9 @@
{
lib,
systems,
config,
nodesConfig,
groups,
groupLibs,
...
}: {
options = let
@ -25,6 +26,11 @@
types
;
inherit
(groupLibs)
resolveGroupsInheritance
;
flakeRef = types.either types.str types.path;
in {
enabled = lib.mkOption {
@ -113,8 +119,8 @@
A function from the `groups` hierarchy to a list of groups this node inherits from.
'';
apply = groupsFn:
groupsFn nodesConfig.groups;
# apply = groupsFn:
# groupsFn nodesConfig.groups |> resolveGroupsInheritance;
};
deploy = {
@ -266,32 +272,32 @@
};
};
config = let
throwGotNull = name:
throw ''
[snow] `nodes.<name>.${name}` must be set for all nodes! (got: <null>)
'';
givenSystem =
(config.system != null)
|| throwGotNull "system";
# config = let
# throwGotNull = name:
# throw ''
# [snow] `nodes.<name>.${name}` must be set for all nodes! (got: <null>)
# '';
# givenSystem =
# (config.system != null)
# || throwGotNull "system";
givenBase =
(config.base != null)
|| throwGotNull "base";
# givenBase =
# (config.base != null)
# || throwGotNull "base";
givenHomeManager =
(config.homeManager != null)
|| throwGotNull "homeManager";
# givenHomeManager =
# (config.homeManager != null)
# || throwGotNull "homeManager";
givenDeployHost =
(config.deploy.ssh.host != null)
|| throwGotNull "deploy.ssh.host";
in
assert givenSystem
&& givenBase
&& givenHomeManager
&& givenDeployHost; {
# extend these from the nodes configuration
inherit (nodesConfig) modules args;
};
# givenDeployHost =
# (config.deploy.ssh.host != null)
# || throwGotNull "deploy.ssh.host";
# in
# assert givenSystem
# && givenBase
# && givenHomeManager
# && givenDeployHost; {
# # extend these from the nodes configuration
# inherit (nodesConfig) modules args;
# };
}

14
nix/snow/flake/nodes/nodes.nix
View file

@ -12,7 +12,9 @@
# See the License for the specific language governing permissions and
# limitations under the License.
{
_snow,
_snowFlake,
snow,
root,
lib,
config,
specialArgs,
@ -26,7 +28,10 @@
flakeRef = types.either types.str types.path;
groupLibs = import ./groups.nix {inherit (_snow.inputs) nt;};
groupLibs = import ./groups.nix {
inherit snow root;
inherit (_snowFlake.inputs) nt;
};
in {
options = {
base = lib.mkOption {
@ -94,8 +99,6 @@ in {
description = ''
Hierarchical groups that nodes can be a member of.
'';
apply = groupLibs.parseGroupsDecl;
};
nodes = mkOption {
@ -103,7 +106,8 @@ in {
specialArgs =
specialArgs
// {
nodeConfig = config;
nodesConfig = config;
inherit groupLibs;
};
modules = [./node.nix];
});

4
nix/snow/flake/outputs/checks.nix
View file

@ -1,10 +1,10 @@
{
config,
_snow,
_snowFlake,
...
}: {
outputs.checks =
_snow.inputs.deploy-rs.lib
_snowFlake.inputs.deploy-rs.lib
|> builtins.mapAttrs (system: deployLib:
deployLib.deployChecks config.outputs.deploy);
}

7
nix/snow/flake/outputs/default.nix Normal file
View file

@ -0,0 +1,7 @@
{...}: {
imports = [
./checks.nix
./deploy.nix
./nixosConfigurations.nix
];
}

37
nix/snow/flake/outputs/deploy.nix
View file

@ -1,37 +1,10 @@
{
_snow,
_snowFlake,
snow,
config,
...
}: let
inherit
(builtins)
mapAttrs
;
mapNodes = nodes: f:
nodes.nodes
|> mapAttrs (name: node: let
# use per-node base or default to nodes' base
base =
if node.base != null
then node.base
else if nodes.base != null
then nodes.base
else
abort ''
snow cannot construct nodes node "${name}" without a base package source.
Ensure `nodes.nodes.*.base` or `nodes.base` is a flake reference to the github:NixOS/nixpkgs repository.
'';
in
f rec {
inherit name node base;
inherit (base) lib;
groups = node.groups (parseGroupsDecl nodes.groups);
groupModules = root: getGroupModules root groups;
});
in {
outputs.deploy.nodes = mapNodes config.nodes ({
}: {
outputs.deploy.nodes = snow.lib.mapNodes config.nodes ({
name,
node,
...
@ -49,7 +22,7 @@ in {
confirmTimeout
;
nixosFor = system: _snow.inputs.deploy-rs.lib.${system}.activate.nixos;
nixosFor = system: _snowFlake.inputs.deploy-rs.lib.${system}.activate.nixos;
in {
hostname =
if ssh.host != null

123
nix/snow/flake/outputs/nixosConfigurations.nix
View file

@ -1,14 +1,5 @@
# {
# _module = { ... };
# _type = "configuration";
# class = null;
# config = { ... };
# extendModules = «lambda extendModules @ /nix/store/9hfp0agnm43kz72l5lpfn9var5p0x2fa-source/lib/modules.nix:340:9»;
# graph = [ ... ];
# options = { ... };
# type = { ... };
# }
{
_snowFlake,
snow,
config,
systems,
@ -27,59 +18,67 @@
nodes
;
in {
outputs.nixosConfigurations = mapNodes nodes (
{
base,
lib,
name,
node,
groupModules,
...
}: let
homeManager =
if node.homeManager != null
then node.homeManager
else if nodes.homeManager != null
then nodes.homeManager
else
warn ''
[snowflake] Neither `nodes.homeManager` nor `nodes.nodes.${name}.homeManager` were specified!
[snowflake] home-manager will NOT be used! User configuration will be ignored!
''
null;
outputs.nixosConfigurations = let
groups = snow.lib.parseGroupDecls root config.nodes.groups;
in
snow.lib.mapNodes nodes (
{
base,
lib,
name,
node,
...
}: let
nodeGroups =
(node.groups groups)
|> snow.lib.resolveGroupsInheritance
|> snow.lib.groupModules;
userArgs = nodes.args // node.args;
snowArgs = {
inherit systems snow root base nodes node;
inherit (node) system;
hostname = name;
homeManager =
if node.homeManager != null
then node.homeManager
else if nodes.homeManager != null
then nodes.homeManager
else
warn ''
[snowflake] Neither `nodes.homeManager` nor `nodes.nodes.${name}.homeManager` were specified!
[snowflake] home-manager will NOT be used! User configuration will be ignored!
''
null;
_snow = {
inherit inputs userArgs snowArgs homeManager;
specialArgs = userArgs // snowArgs;
userArgs = nodes.args // node.args;
snowArgs = {
inherit systems snow root base nodes node;
inherit (node) system;
hostname = name;
_snow = {
inherit (_snowFlake) inputs;
inherit userArgs snowArgs homeManager;
specialArgs = userArgs // snowArgs;
};
};
};
specialArgs = assert (userArgs
|> attrNames
|> all (argName:
! snowArgs ? argName
|| abort ''
`specialArgs` are like super important to Snow my love... </3
But `args.${argName}` is a reserved argument name :(
''));
snowArgs._snow.specialArgs;
in
lib.nixosSystem {
inherit (node) system;
inherit specialArgs;
modules =
[
snow.nixosModules.default
(snow.findImport /${root}/hosts/${name})
]
++ (groupModules root)
++ node.modules
++ nodes.modules;
}
);
specialArgs = assert (userArgs
|> attrNames
|> all (argName:
! snowArgs ? argName
|| abort ''
`specialArgs` are like super important to Snow my love... </3
But `args.${argName}` is a reserved argument name :(
''));
snowArgs._snow.specialArgs;
in
lib.nixosSystem {
inherit (node) system;
inherit specialArgs;
modules =
[
_snowFlake.self.nixosModules.default
(snow.lib.findImport /${root}/hosts/${name})
]
++ nodeGroups
++ node.modules
++ nodes.modules;
}
);
}