feat(T01): bootstrap IHP v1.5 project scaffold

Merged ihp-new generated scaffold into repo. Sets appName to inter-hub,
adds Nix flake with IHP inputs, devenv config, and standard IHP project
structure. Nix + ihp-new + direnv installed system-wide.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.envrc

@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+# See https://github.com/cachix/devenv/blob/main/templates/flake-parts/.envrc
+
+if ! has nix_direnv_version || ! nix_direnv_version 3.1.0; then
+    source_url "https://raw.githubusercontent.com/nix-community/nix-direnv/3.1.0/direnvrc" "sha256-yMJ2OVMzrFaDPn7q8nCBZFRYpL/f0RcHzhmw/i6btJM="
+fi
+
+export DEVENV_IN_DIRENV_SHELL=true
+
+watch_file flake.nix
+watch_file flake.lock
+
+mkdir -p "$PWD/.devenv"
+DEVENV_ROOT_FILE="$PWD/.devenv/root"
+printf %s "$PWD" >"$DEVENV_ROOT_FILE"
+if ! use flake . --override-input devenv-root "file+file://$DEVENV_ROOT_FILE" --accept-flake-config; then
+    echo "devenv could not be built. The devenv environment was not loaded. Make the necessary changes to devenv.nix and hit enter to try again." >&2
+fi
+
+# Include .env file if it exists locally. Use the .env file to load env vars that you don't want to commit to git
+if [ -f .env ]
+then
+    set -o allexport
+    source .env
+    set +o allexport
+fi
+# Add your env vars here
+#
+# E.g. export AWS_ACCESS_KEY_ID="XXXXX"
+
+# SMTP config for local development.
+export SMTP_HOST="127.0.0.1" # On some computers may need `127.0.1.1` instead.
+export SMTP_PORT="1025"
+export SMTP_ENCRYPTION="Unencrypted"

.ghci

@@ -0,0 +1,4 @@
+:set -XNoImplicitPrelude
+:def loadFromIHP \file -> (System.Environment.getEnv "IHP_LIB") >>= (\ihpLib -> readFile (ihpLib <> "/" <> file))
+:loadFromIHP applicationGhciConfig
+import IHP.Prelude

.gitattributes

@@ -0,0 +1,3 @@
+* text=auto eol=lf
+*.sql text
+*.hs text

.github/workflows/nix-flake-check.yml

@@ -0,0 +1,24 @@
+name: Test
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v6
+    - uses: wimpysworld/nothing-but-nix@main
+      with:
+        hatchet-protocol: 'rampage'
+    - uses: DeterminateSystems/nix-installer-action@main
+      with:
+        determinate: true
+        extra-conf: "lazy-trees = true"
+    - uses: cachix/cachix-action@v16
+      with:
+        name: digitallyinduced
+        skipPush: true
+    - uses: DeterminateSystems/magic-nix-cache-action@main
+    - run: nix flake check --impure -L

.gitignore

@@ -1,176 +1,28 @@
-# ---> Python
+.DS_Store
-# Byte-compiled / optimized / DLL files
+.idea
-__pycache__/
-*.py[cod]
-*$py.class
-
-# C extensions
-*.so
-
-# Distribution / packaging
-.Python
-build/
-develop-eggs/
-dist/
-downloads/
-eggs/
-.eggs/
-lib/
-lib64/
-parts/
-sdist/
-var/
-wheels/
-share/python-wheels/
-*.egg-info/
-.installed.cfg
-*.egg
-MANIFEST
-
-# PyInstaller
-#  Usually these files are written by a python script from a template
-#  before PyInstaller builds the exe, so as to inject date/other infos into it.
-*.manifest
-*.spec
-
-# Installer logs
-pip-log.txt
-pip-delete-this-directory.txt
-
-# Unit test / coverage reports
-htmlcov/
-.tox/
-.nox/
-.coverage
-.coverage.*
-.cache
-nosetests.xml
-coverage.xml
-*.cover
-*.py,cover
-.hypothesis/
-.pytest_cache/
-cover/
-
-# Translations
-*.mo
-*.pot
-
-# Django stuff:
-*.log
-local_settings.py
-db.sqlite3
-db.sqlite3-journal
-
-# Flask stuff:
-instance/
-.webassets-cache
-
-# Scrapy stuff:
-.scrapy
-
-# Sphinx documentation
-docs/_build/
-
-# PyBuilder
-.pybuilder/
-target/
-
-# Jupyter Notebook
-.ipynb_checkpoints
-
-# IPython
-profile_default/
-ipython_config.py
-
-# pyenv
-#   For a library or package, you might want to ignore these files since the code is
-#   intended to run in multiple environments; otherwise, check them in:
-# .python-version
-
-# pipenv
-#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
-#   However, in case of collaboration, if having platform-specific dependencies or dependencies
-#   having no cross-platform support, pipenv may install dependencies that don't work, or not
-#   install all needed dependencies.
-#Pipfile.lock
-
-# UV
-#   Similar to Pipfile.lock, it is generally recommended to include uv.lock in version control.
-#   This is especially recommended for binary packages to ensure reproducibility, and is more
-#   commonly ignored for libraries.
-#uv.lock
-
-# poetry
-#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
-#   This is especially recommended for binary packages to ensure reproducibility, and is more
-#   commonly ignored for libraries.
-#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
-#poetry.lock
-
-# pdm
-#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
-#pdm.lock
-#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
-#   in version control.
-#   https://pdm.fming.dev/latest/usage/project/#working-with-version-control
-.pdm.toml
-.pdm-python
-.pdm-build/
-
-# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
-__pypackages__/
-
-# Celery stuff
-celerybeat-schedule
-celerybeat.pid
-
-# SageMath parsed files
-*.sage.py
-
-# Environments
 .env
-.venv
+tmp
-env/
+result
-venv/
+node_modules
-ENV/
+bin
-env.bak/
+*.iml
-venv.bak/
+Generated
+dist
+dist-newstyle
+*.dyn_hi
+*.dyn_o
+*.hi
+*.o
+build
+gen
+del
+static/prod.*
+Config/client_session_key.aes
 
-# Spyder project settings
+# Ignore locally checked out IHP version
-.spyderproject
+IHP
-.spyproject
-
-# Rope project settings
-.ropeproject
-
-# mkdocs documentation
-/site
-
-# mypy
-.mypy_cache/
-.dmypy.json
-dmypy.json
-
-# Pyre type checker
-.pyre/
-
-# pytype static type analyzer
-.pytype/
-
-# Cython debug symbols
-cython_debug/
-
-# PyCharm
-#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
-#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
-#  and can be added to the global gitignore or merged into this file.  For a more nuclear
-#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
-#.idea/
-
-# Ruff stuff:
-.ruff_cache/
-
-# PyPI configuration file
-.pypirc
 
+# devenv.sh
+.devenv*
+devenv.local.nix
+.direnv

.stylish-haskell.yaml

@@ -0,0 +1,415 @@
+# stylish-haskell configuration file
+# ==================================
+
+# The stylish-haskell tool is mainly configured by specifying steps. These steps
+# are a list, so they have an order, and one specific step may appear more than
+# once (if needed). Each file is processed by these steps in the given order.
+steps:
+  # Convert some ASCII sequences to their Unicode equivalents. This is disabled
+  # by default.
+  # - unicode_syntax:
+  #     # In order to make this work, we also need to insert the UnicodeSyntax
+  #     # language pragma. If this flag is set to true, we insert it when it's
+  #     # not already present. You may want to disable it if you configure
+  #     # language extensions using some other method than pragmas. Default:
+  #     # true.
+  #     add_language_pragma: true
+
+  # Format module header
+  #
+  # Currently, this option is not configurable and will format all exports and
+  # module declarations to minimize diffs
+  #
+  # - module_header:
+  #     # How many spaces use for indentation in the module header.
+  #     indent: 4
+  #
+  #     # Should export lists be sorted?  Sorting is only performed within the
+  #     # export section, as delineated by Haddock comments.
+  #     sort: true
+  #
+  #     # See `separate_lists` for the `imports` step.
+  #     separate_lists: true
+  #
+  #     # When to break the "where".
+  #     # Possible values:
+  #     # - exports: only break when there is an explicit export list.
+  #     # - single: only break when the export list counts more than one export.
+  #     # - inline: only break when the export list is too long. This is
+  #     #   determined by the `columns` setting. Not applicable when the export
+  #     #   list contains comments as newlines will be required.
+  #     # - always: always break before the "where".
+  #     break_where: exports
+  #
+  #     # Where to put open bracket
+  #     # Possible values:
+  #     # - same_line: put open bracket on the same line as the module name, before the
+  #     #              comment of the module
+  #     # - next_line: put open bracket on the next line, after module comment
+  #     open_bracket: next_line
+
+  # Format record definitions. This is disabled by default.
+  #
+  # You can control the layout of record fields. The only rules that can't be configured
+  # are these:
+  #
+  # - "|" is always aligned with "="
+  # - "," in fields is always aligned with "{"
+  # - "}" is likewise always aligned with "{"
+  #
+  # - records:
+  #     # How to format equals sign between type constructor and data constructor.
+  #     # Possible values:
+  #     # - "same_line" -- leave "=" AND data constructor on the same line as the type constructor.
+  #     # - "indent N" -- insert a new line and N spaces from the beginning of the next line.
+  #     equals: "indent 2"
+  #
+  #     # How to format first field of each record constructor.
+  #     # Possible values:
+  #     # - "same_line" -- "{" and first field goes on the same line as the data constructor.
+  #     # - "indent N" -- insert a new line and N spaces from the beginning of the data constructor
+  #     first_field: "indent 2"
+  #
+  #     # How many spaces to insert between the column with "," and the beginning of the comment in the next line.
+  #     field_comment: 2
+  #
+  #     # How many spaces to insert before "deriving" clause. Deriving clauses are always on separate lines.
+  #     deriving: 2
+  #
+  #     # How many spaces to insert before "via" clause counted from indentation of deriving clause
+  #     # Possible values:
+  #     # - "same_line" -- "via" part goes on the same line as "deriving" keyword.
+  #     # - "indent N" -- insert a new line and N spaces from the beginning of "deriving" keyword.
+  #     via: "indent 2"
+  #
+  #     # Sort typeclass names in the "deriving" list alphabetically.
+  #     sort_deriving: true
+  #
+  #     # Whether or not to break enums onto several lines
+  #     #
+  #     # Default: false
+  #     break_enums: false
+  #
+  #     # Whether or not to break single constructor data types before `=` sign
+  #     #
+  #     # Default: true
+  #     break_single_constructors: true
+  #
+  #     # Whether or not to curry constraints on function.
+  #     #
+  #     # E.g: @allValues :: Enum a => Bounded a => Proxy a -> [a]@
+  #     #
+  #     # Instead of @allValues :: (Enum a, Bounded a) => Proxy a -> [a]@
+  #     #
+  #     # Default: false
+  #     curried_context: false
+
+  # Align the right hand side of some elements.  This is quite conservative
+  # and only applies to statements where each element occupies a single
+  # line.
+  # Possible values:
+  # - always - Always align statements.
+  # - adjacent - Align statements that are on adjacent lines in groups.
+  # - never - Never align statements.
+  # All default to always.
+  - simple_align:
+      cases: always
+      top_level_patterns: always
+      records: always
+      multi_way_if: always
+
+  # Import cleanup
+  - imports:
+      # There are different ways we can align names and lists.
+      #
+      # - global: Align the import names and import list throughout the entire
+      #   file.
+      #
+      # - file: Like global, but don't add padding when there are no qualified
+      #   imports in the file.
+      #
+      # - group: Only align the imports per group (a group is formed by adjacent
+      #   import lines).
+      #
+      # - none: Do not perform any alignment.
+      #
+      # Default: global.
+      align: none
+
+      # The following options affect only import list alignment.
+      #
+      # List align has following options:
+      #
+      # - after_alias: Import list is aligned with end of import including
+      #   'as' and 'hiding' keywords.
+      #
+      #   > import qualified Data.List      as List (concat, foldl, foldr, head,
+      #   >                                          init, last, length)
+      #
+      # - with_alias: Import list is aligned with start of alias or hiding.
+      #
+      #   > import qualified Data.List      as List (concat, foldl, foldr, head,
+      #   >                                 init, last, length)
+      #
+      # - with_module_name: Import list is aligned `list_padding` spaces after
+      #   the module name.
+      #
+      #   > import qualified Data.List      as List (concat, foldl, foldr, head,
+      #                          init, last, length)
+      #
+      #   This is mainly intended for use with `pad_module_names: false`.
+      #
+      #   > import qualified Data.List as List (concat, foldl, foldr, head,
+      #                          init, last, length, scanl, scanr, take, drop,
+      #                          sort, nub)
+      #
+      # - new_line: Import list starts always on new line.
+      #
+      #   > import qualified Data.List      as List
+      #   >     (concat, foldl, foldr, head, init, last, length)
+      #
+      # - repeat: Repeat the module name to align the import list.
+      #
+      #   > import qualified Data.List      as List (concat, foldl, foldr, head)
+      #   > import qualified Data.List      as List (init, last, length)
+      #
+      # Default: after_alias
+      list_align: after_alias
+
+      # Right-pad the module names to align imports in a group:
+      #
+      # - true: a little more readable
+      #
+      #   > import qualified Data.List       as List (concat, foldl, foldr,
+      #   >                                           init, last, length)
+      #   > import qualified Data.List.Extra as List (concat, foldl, foldr,
+      #   >                                           init, last, length)
+      #
+      # - false: diff-safe
+      #
+      #   > import qualified Data.List as List (concat, foldl, foldr, init,
+      #   >                                     last, length)
+      #   > import qualified Data.List.Extra as List (concat, foldl, foldr,
+      #   >                                           init, last, length)
+      #
+      # Default: true
+      pad_module_names: true
+
+      # Long list align style takes effect when import is too long. This is
+      # determined by 'columns' setting.
+      #
+      # - inline: This option will put as much specs on same line as possible.
+      #
+      # - new_line: Import list will start on new line.
+      #
+      # - new_line_multiline: Import list will start on new line when it's
+      #   short enough to fit to single line. Otherwise it'll be multiline.
+      #
+      # - multiline: One line per import list entry.
+      #   Type with constructor list acts like single import.
+      #
+      #   > import qualified Data.Map as M
+      #   >     ( empty
+      #   >     , singleton
+      #   >     , ...
+      #   >     , delete
+      #   >     )
+      #
+      # Default: inline
+      long_list_align: inline
+
+      # Align empty list (importing instances)
+      #
+      # Empty list align has following options
+      #
+      # - inherit: inherit list_align setting
+      #
+      # - right_after: () is right after the module name:
+      #
+      #   > import Vector.Instances ()
+      #
+      # Default: inherit
+      empty_list_align: inherit
+
+      # List padding determines indentation of import list on lines after import.
+      # This option affects 'long_list_align'.
+      #
+      # - <integer>: constant value
+      #
+      # - module_name: align under start of module name.
+      #   Useful for 'file' and 'group' align settings.
+      #
+      # Default: 4
+      list_padding: 4
+
+      # Separate lists option affects formatting of import list for type
+      # or class. The only difference is single space between type and list
+      # of constructors, selectors and class functions.
+      #
+      # - true: There is single space between Foldable type and list of it's
+      #   functions.
+      #
+      #   > import Data.Foldable (Foldable (fold, foldl, foldMap))
+      #
+      # - false: There is no space between Foldable type and list of it's
+      #   functions.
+      #
+      #   > import Data.Foldable (Foldable(fold, foldl, foldMap))
+      #
+      # Default: true
+      separate_lists: true
+
+      # Space surround option affects formatting of import lists on a single
+      # line. The only difference is single space after the initial
+      # parenthesis and a single space before the terminal parenthesis.
+      #
+      # - true: There is single space associated with the enclosing
+      #   parenthesis.
+      #
+      #   > import Data.Foo ( foo )
+      #
+      # - false: There is no space associated with the enclosing parenthesis
+      #
+      #   > import Data.Foo (foo)
+      #
+      # Default: false
+      space_surround: false
+
+      # Post qualify option moves any qualifies found in import declarations
+      # to the end of the declaration. This also adjust padding for any
+      # unqualified import declarations.
+      #
+      # - true: Qualified as <module name> is moved to the end of the
+      #   declaration.
+      #
+      #   > import Data.Bar
+      #   > import Data.Foo qualified as F
+      #
+      # - false: Qualified remains in the default location and unqualified
+      #   imports are padded to align with qualified imports.
+      #
+      #   > import           Data.Bar
+      #   > import qualified Data.Foo as F
+      #
+      # Default: false
+      post_qualify: false
+
+  # Language pragmas
+  - language_pragmas:
+      # We can generate different styles of language pragma lists.
+      #
+      # - vertical: Vertical-spaced language pragmas, one per line.
+      #
+      # - compact: A more compact style.
+      #
+      # - compact_line: Similar to compact, but wrap each line with
+      #   `{-# LANGUAGE #-}'.
+      #
+      # - vertical_compact: Similar to vertical, but use only one language pragma.
+      #
+      # Default: vertical.
+      style: vertical
+
+      # Align affects alignment of closing pragma brackets.
+      #
+      # - true: Brackets are aligned in same column.
+      #
+      # - false: Brackets are not aligned together. There is only one space
+      #   between actual import and closing bracket.
+      #
+      # Default: true
+      align: true
+
+      # stylish-haskell can detect redundancy of some language pragmas. If this
+      # is set to true, it will remove those redundant pragmas. Default: true.
+      remove_redundant: true
+
+      # Language prefix to be used for pragma declaration, this allows you to
+      # use other options non case-sensitive like "language" or "Language".
+      # If a non correct String is provided, it will default to: LANGUAGE.
+      language_prefix: LANGUAGE
+
+  # Replace tabs by spaces. This is disabled by default.
+  # - tabs:
+  #     # Number of spaces to use for each tab. Default: 8, as specified by the
+  #     # Haskell report.
+  #     spaces: 8
+
+  # Remove trailing whitespace
+  - trailing_whitespace: {}
+
+  # Squash multiple spaces between the left and right hand sides of some
+  # elements into single spaces. Basically, this undoes the effect of
+  # simple_align but is a bit less conservative.
+  # - squash: {}
+
+# A common setting is the number of columns (parts of) code will be wrapped
+# to. Different steps take this into account.
+#
+# Set this to null to disable all line wrapping.
+#
+# Default: 80.
+columns: 80
+
+# By default, line endings are converted according to the OS. You can override
+# preferred format here.
+#
+# - native: Native newline format. CRLF on Windows, LF on other OSes.
+#
+# - lf: Convert to LF ("\n").
+#
+# - crlf: Convert to CRLF ("\r\n").
+#
+# Default: native.
+newline: native
+
+# Sometimes, language extensions are specified in a cabal file or from the
+# command line instead of using language pragmas in the file. stylish-haskell
+# needs to be aware of these, so it can parse the file correctly.
+#
+# No language extensions are enabled by default.
+language_extensions:
+  - BangPatterns
+  - BlockArguments
+  - BlockArguments
+  - DataKinds
+  - DefaultSignatures
+  - DeriveDataTypeable
+  - DeriveGeneric
+  - DerivingVia
+  - DisambiguateRecordFields
+  - DuplicateRecordFields
+  - EmptyDataDeriving
+  - FlexibleContexts
+  - FlexibleInstances
+  - FunctionalDependencies
+  - ImplicitParams
+  - InstanceSigs
+  - LambdaCase
+  - MultiParamTypeClasses
+  - MultiWayIf
+  - MultiWayIf
+  - NamedFieldPuns
+  - NoImplicitPrelude
+  - OverloadedLabels
+  - OverloadedStrings
+  - PackageImports
+  - PartialTypeSignatures
+  - PartialTypeSignatures
+  - QuasiQuotes
+  - Rank2Types
+  - RecordWildCards
+  - ScopedTypeVariables
+  - StandaloneDeriving
+  - TemplateHaskell
+  - TypeApplications
+  - TypeFamilies
+  - TypeOperators
+  - TypeSynonymInstances
+  - UndecidableInstances
+
+# Attempt to find the cabal file in ancestors of the current directory, and
+# parse options (currently only language extensions) from that.
+#
+# Default: true
+cabal: true

App.cabal

@@ -0,0 +1,73 @@
+-- This file is only a stub file, please see default.nix for adding dependencies.
+--
+-- Learn more about dependency management in IHP: https://ihp.digitallyinduced.com/Guide/package-management.html
+--
+-- If you're looking at this file because you're trying to integrate a HLS or other tooling with your IHP project, check out the documentation on Editors and Tooling: https://ihp.digitallyinduced.com/Guide/editors.html
+--
+-- This cabal file is inside your project as some haskell tools only work when there's a cabal file. It's not actually used for anything besides providing support for haskell tools.
+--
+
+name:                App
+version:             0.1.0.0
+-- synopsis:
+-- description:
+license:             AllRightsReserved
+license-file:        LICENSE
+author:              Developers
+maintainer:          developers@example.com
+-- copyright:
+-- category:
+build-type:          Simple
+cabal-version:       >=1.10
+
+executable App
+  main-is:             Main.hs
+  -- other-modules:
+  -- other-extensions:
+  build-depends:
+  	ihp,
+  	base,
+  	wai,
+    text,
+    hspec,
+    ihp-hspec
+  hs-source-dirs:      .
+  default-language:    Haskell2010
+  extensions:
+    OverloadedStrings
+    , NoImplicitPrelude
+    , ImplicitParams
+    , Rank2Types
+    , DisambiguateRecordFields
+    , NamedFieldPuns
+    , DuplicateRecordFields
+    , OverloadedLabels
+    , FlexibleContexts
+    , TypeSynonymInstances
+    , FlexibleInstances
+    , QuasiQuotes
+    , TypeFamilies
+    , PackageImports
+    , ScopedTypeVariables
+    , RecordWildCards
+    , TypeApplications
+    , DataKinds
+    , InstanceSigs
+    , DeriveGeneric
+    , MultiParamTypeClasses
+    , TypeOperators
+    , DeriveDataTypeable
+    , MultiWayIf
+    , UndecidableInstances
+    , BlockArguments
+    , PartialTypeSignatures
+    , LambdaCase
+    , DefaultSignatures
+    , EmptyDataDeriving
+    , BangPatterns
+    , BlockArguments
+    , MultiWayIf
+    , FunctionalDependencies
+    , PartialTypeSignatures
+    , StandaloneDeriving
+    , DerivingVia

Application/Helper/Controller.hs

@@ -0,0 +1,5 @@
+module Application.Helper.Controller where
+
+import IHP.ControllerPrelude
+
+-- Here you can add functions which are available in all your controllers

Application/Helper/View.hs

@@ -0,0 +1,5 @@
+module Application.Helper.View where
+
+import IHP.ViewPrelude
+
+-- Here you can add functions which are available in all your views

Application/Schema.sql

@@ -0,0 +1 @@
+-- Your database schema. Use the Schema Designer at http://localhost:8001/ to add some tables.

Application/Script/Prelude.hs

@@ -0,0 +1,12 @@
+module Application.Script.Prelude
+( module IHP.ControllerPrelude
+, module Generated.Types
+, module IHP.Prelude
+, module IHP.ScriptSupport
+)
+where
+
+import IHP.Prelude
+import IHP.ControllerPrelude
+import Generated.Types
+import IHP.ScriptSupport

Config/Config.hs

@@ -0,0 +1,11 @@
+module Config where
+
+import IHP.Prelude
+import IHP.Environment
+import IHP.FrameworkConfig
+
+config :: ConfigBuilder
+config = do
+    -- See https://ihp.digitallyinduced.com/Guide/config.html
+    -- for what you can do here
+    pure ()

Config/nix/hosts/production/configuration.nix

@@ -0,0 +1,92 @@
+{ ihp, lib, pkgs, ... }: {
+    imports = [
+        ./hardware-configuration.nix
+
+        # This sets several default options. It's designed for simple, small apps where the database and app server
+        # are on the same host.
+        #
+        # See https://github.com/digitallyinduced/ihp/blob/master/NixSupport/nixosModules/appWithPostgres.nix for details
+        # 
+        # For more complex production deployments, consider ihp.nixosModules.app (https://github.com/digitallyinduced/ihp/blob/master/NixSupport/nixosModules/app.nix)
+        ihp.nixosModules.appWithPostgres
+    ];
+
+    networking.firewall = {
+        enable = true;
+        allowedTCPPorts = [ 22 80 443 ];
+    };
+
+    # Enable the Let's encrypt certificate
+    security.acme.defaults.email = "CHANGE-ME@example.com";
+
+    # Accept the terms of service of the Let's encrypt provider.
+    security.acme.acceptTerms = true;
+
+    services.nginx = {
+        virtualHosts."CHANGE-ME.com" =  {
+            # Uncomment to have http auth with username `foo` and password `bar`.
+            # basicAuth = { foo = "bar"; };
+        };
+    };
+
+    # Logging to AWS CloudWatch
+    # services.vector = {
+    #     enable = true;
+    #     journaldAccess = true;
+    #     settings = {
+    #         sources.journald = {
+    #             type = "journald";
+    #             # Log only the services we care about
+    #             include_units = ["app.service" "nginx.service" "worker.service"];
+    #         };
+
+    #         sinks.out = {
+    #             group_name = "CHANGE-ME";
+    #             stream_name = "CHANGE-ME";
+    #             # Change the region to the correct one, e.g. `us-east-1`
+    #             region = "CHANGE-ME";
+    #             auth = {
+    #                 access_key_id = "CHANGE-ME";
+    #                 secret_access_key = "CHANGE-ME";
+    #             };
+    #             inputs  = ["journald"];
+    #             type = "aws_cloudwatch_logs";
+    #             compression = "gzip";
+    #             encoding.codec = "json";
+    #         };
+    #     };
+    # };
+
+    services.ihp = {
+        domain = "CHANGE-ME.com";
+        migrations = ./Application/Migration;
+        schema = ./Application/Schema.sql;
+        fixtures = ./Application/Fixtures.sql;
+        sessionSecret = "CHANGE-ME";
+        # Uncomment to use a custom database URL
+        # databaseUrl = lib.mkForce "postgresql://postgres:...CHANGE-ME";
+
+        additionalEnvVars = {
+            # Uncomment to use a custom session secret, ensuring sessions aren't invalidated
+            # on each deploy.
+            # Learn how to create the secret key in https://ihp.digitallyinduced.com/Guide/deployment.html#ihpsessionsecret
+            # IHP_SESSION_SECRET = "CHANGE-ME";
+
+            SMTP_HOST = "email-smtp.eu-west-1.amazonaws.com";
+            SMTP_PORT = "587";
+            SMTP_ENCRYPTION = "STARTTLS";
+
+            SMTP_USER = "CHANGE-ME";
+            SMTP_PASSWORD = "CHANGE-ME";
+
+            AWS_ACCESS_KEY_ID = "CHANGE-ME";
+            AWS_SECRET_ACCESS_KEY = "CHANGE-ME";
+        };
+    };
+    # As we use a pre-built AMI on AWS,
+    # it is essential to enable automatic updates.
+    # @see https://nixos.wiki/wiki/Automatic_system_upgrades
+    system.autoUpgrade.enable = true;
+    # Keep as is. See https://nixos.wiki/wiki/FAQ/When_do_I_update_stateVersion
+    system.stateVersion = "25.05";
+}

Config/nix/hosts/production/hardware-configuration.nix

@@ -0,0 +1,13 @@
+# Autogenerated hardware config
+# Run 'nixos-generate-config' on the deployment host to generate it
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+    imports = [
+        # For AWS EC2: "${inputs.nixpkgs}/nixos/modules/virtualisation/amazon-image.nix"
+    ];
+
+    # For testing purposes only, remove on bootable hosts.
+    boot.loader.grub.enable = pkgs.lib.mkDefault false;
+    fileSystems."/".device = pkgs.lib.mkDefault "/dev/null";
+}

Config/nix/hosts/production/host.nix

@@ -0,0 +1,6 @@
+{ inputs }:
+inputs.nixpkgs-nixos.lib.nixosSystem {
+    system = "x86_64-linux"; # or alternatively: aarch64-linux
+    specialArgs = inputs // { nixpkgs = inputs.nixpkgs-nixos; };
+    modules = [ ./configuration.nix ];
+}

Config/nix/nixpkgs-config.nix

@@ -0,0 +1,7 @@
+# See https://ihp.digitallyinduced.com/Guide/package-management.html
+{ ihp, additionalNixpkgsOptions, ... }:
+import "${toString ihp}/NixSupport/make-nixpkgs-from-options.nix" {
+    ihp = ihp;
+    haskellPackagesDir = ./haskell-packages/.;
+    additionalNixpkgsOptions = additionalNixpkgsOptions;
+}

Main.hs

@@ -0,0 +1,17 @@
+module Main where
+import IHP.Prelude
+
+import Config
+import qualified IHP.Server
+import IHP.RouterSupport
+import IHP.FrameworkConfig
+import IHP.Job.Types
+
+instance FrontController RootApplication where
+    controllers = []
+
+instance Worker RootApplication where
+    workers _ = []
+
+main :: IO ()
+main = IHP.Server.run config

Makefile

@@ -0,0 +1,17 @@
+CSS_FILES += ${IHP}/static/vendor/bootstrap.min.css
+CSS_FILES += ${IHP}/static/vendor/flatpickr.min.css
+CSS_FILES += static/app.css
+
+JS_FILES += ${IHP}/static/vendor/jquery-3.6.0.slim.min.js
+JS_FILES += ${IHP}/static/vendor/timeago.js
+JS_FILES += ${IHP}/static/vendor/popper.min.js
+JS_FILES += ${IHP}/static/vendor/bootstrap.min.js
+JS_FILES += ${IHP}/static/vendor/flatpickr.js
+JS_FILES += ${IHP}/static/helpers.js
+JS_FILES += ${IHP}/static/vendor/morphdom-umd.min.js
+JS_FILES += ${IHP}/static/vendor/turbolinks.js
+JS_FILES += ${IHP}/static/vendor/turbolinksInstantClick.js
+JS_FILES += ${IHP}/static/vendor/turbolinksMorphdom.js
+
+include ${IHP}/Makefile.dist
+

Setup.hs

@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain

Test/Integration.hs

@@ -0,0 +1,23 @@
+module Main where
+
+import Test.Hspec
+import IHP.Prelude
+import IHP.ModelSupport
+import IHP.Log.Types
+import System.Environment (lookupEnv)
+
+-- Integration tests run with a temporary PostgreSQL database.
+-- The DATABASE_URL env var is set automatically by `nix flake check`.
+-- See: https://ihp.digitallyinduced.com/Guide/testing.html
+main :: IO ()
+main = do
+    databaseUrl <- lookupEnv "DATABASE_URL" >>= \case
+        Just url -> pure (cs url)
+        Nothing -> error "DATABASE_URL not set. Run `devenv up` first or use `nix flake check`."
+    logger <- newLogger def { level = Warn }
+    withModelContext databaseUrl logger \modelContext -> do
+        let ?modelContext = modelContext
+        hspec do
+            describe "Database" do
+                it "can execute a query" do
+                    sqlExecDiscardResult "SELECT 1" ()

Test/Main.hs

@@ -0,0 +1,13 @@
+module Main where
+
+import Test.Hspec
+import IHP.Prelude
+
+-- Import your test specs here:
+-- import Test.MySpec
+
+main :: IO ()
+main = hspec do
+    describe "Example" do
+        it "should pass" do
+            1 + 1 `shouldBe` (2 :: Int)

default.nix

@@ -0,0 +1,9 @@
+# For backwards compatibility using flake.nix
+(import
+    (
+        fetchTarball {
+            url = "https://github.com/edolstra/flake-compat/archive/35bb57c0c8d8b62bbfd284272c928ceb64ddbde9.tar.gz";
+            sha256 = "sha256:1prd9b1xx8c0sfwnyzkspplh30m613j42l1k789s521f4kv4c2z2";
+        }
+    )
+{ src = ./.; }).defaultNix

flake.nix

@@ -0,0 +1,108 @@
+{
+    inputs = {
+        ihp.url = "github:digitallyinduced/ihp/v1.5";
+        nixpkgs.follows = "ihp/nixpkgs";
+        nixpkgs-nixos.follows = "ihp/nixpkgs-nixos";
+        flake-parts.follows = "ihp/flake-parts";
+        devenv.follows = "ihp/devenv";
+        systems.follows = "ihp/systems";
+        devenv-root = {
+            url = "file+file:///dev/null";
+            flake = false;
+        };
+    };
+
+    outputs = inputs@{ self, nixpkgs, nixpkgs-nixos, ihp, flake-parts, systems, ... }:
+        flake-parts.lib.mkFlake { inherit inputs; } {
+
+            systems = import systems;
+            imports = [ ihp.flakeModules.default ];
+
+            perSystem = { pkgs, ... }: {
+                ihp = {
+                    appName = "inter-hub";
+                    enable = true;
+                    projectPath = ./.;
+                    packages = with pkgs; [
+                        # Native dependencies, e.g. imagemagick
+                    ];
+                    haskellPackages = p: with p; [
+                        # Haskell dependencies go here
+                        p.ihp
+                        base
+                        wai
+                        text
+                        # ihp-mail           # Email support: https://ihp.digitallyinduced.com/Guide/mail.html
+                        # ihp-datasync       # Real-time DataSync
+                        # ihp-job-dashboard  # Job dashboard UI
+                        # ihp-typed-sql      # Type-safe SQL queries
+                        # ihp-pglistener     # PostgreSQL LISTEN/NOTIFY
+                    ];
+                    devHaskellPackages = p: with p; [
+                        cabal-install
+                        hlint
+                        hspec
+                        ihp-hspec
+                    ];
+
+                    # Hoogle documentation server (enabled by default on port 8002)
+                    # withHoogle = false; # Disable to save memory
+
+                    # Disable relation type machinery for faster compilation
+                    # relationSupport = false;
+
+                    # Skip tests/haddock for specific packages to speed up builds
+                    # dontCheckPackages = [ "my-package" ];
+                    # doJailbreakPackages = [ "my-package" ];
+                    # dontHaddockPackages = [ "my-package" ];
+
+                    # Production build tuning
+                    # optimizationLevel = "2"; # Default: "1", use "2" for more optimized production binaries
+                    # rtsFlags = "-A96m -N"; # GHC runtime flags for compiled binaries
+
+                    # Mount additional directories under /static/ in production builds
+                    # static.extraDirs = {
+                    #     # Frontend = self.packages.${system}.frontend;
+                    # };
+                    # static.makeBundling = true; # Set false if not using Makefile for CSS/JS bundling
+                };
+
+                # Custom configuration that will start with `devenv up`
+                devenv.shells.default = {
+                    # Start Mailhog on local development to catch outgoing emails
+                    # services.mailhog.enable = true;
+
+                    # PostgreSQL extensions
+                    # services.postgres.extensions = extensions: [ extensions.postgis ];
+
+                    # Custom processes that don't appear in https://devenv.sh/reference/options/
+                    processes = {
+                        # Uncomment if you use tailwindcss.
+                        # tailwind.exec = "tailwindcss -c tailwind/tailwind.config.js -i ./tailwind/app.css -o static/app.css --watch=always";
+                    };
+                };
+            };
+
+            # Adding the new NixOS configuration for "production"
+            # See https://ihp.digitallyinduced.com/Guide/deployment.html#deploying-with-deploytonixos for more info
+            # Used to deploy the IHP application
+            flake.nixosConfigurations."production" = import ./Config/nix/hosts/production/host.nix { inherit inputs; };
+        };
+
+    # The following configuration speeds up build times by using the devenv, cachix and digitallyinduced binary caches
+    # You can add your own cachix cache here to speed up builds. For that uncomment the following lines and replace `CHANGE-ME` with your cachix cache name
+    nixConfig = {
+        extra-substituters = [
+            "https://devenv.cachix.org"
+            "https://cachix.cachix.org"
+            "https://digitallyinduced.cachix.org"
+            # "https://CHANGE-ME.cachix.org"
+        ];
+        extra-trusted-public-keys = [
+            "devenv.cachix.org-1:w1cLUi8dv3hnoSPGAuibQv+f9TZLr6cv/Hm9XgU50cw="
+            "cachix.cachix.org-1:eWNHQldwUO7G2VkjpnjDbWwy4KQ/HNxht7H4SSoMckM="
+            "digitallyinduced.cachix.org-1:y+wQvrnxQ+PdEsCt91rmvv39qRCYzEgGQaldK26hCKE="
+            # "CHANGE-ME.cachix.org-1:CHANGE-ME-PUBLIC-KEY"
+        ];
+    };
+}

hie.yaml

@@ -0,0 +1,4 @@
+# Used by haskell-language-server to find GHC settings
+cradle:
+    bios:
+        shell: "/bin/sh $IHP/.hie-bios"

start

@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+devenv up

static/app.js

@@ -0,0 +1,3 @@
+$(document).on('ready turbolinks:load', function () {
+    // This is called on the first page load *and* also when the page is changed by turbolinks
+});