Meson misc things

Co-Authored-By: Qyriad <qyriad@qyriad.me>
Co-Authored-By: eldritch horrors <pennae@lix.systems>

build-utils-meson/export/meson.build

@@ -10,6 +10,7 @@ foreach dep : deps_public_subproject
 endforeach
 requires_public += deps_public
 
+extra_pkg_config_variables = get_variable('extra_pkg_config_variables', {})
 import('pkgconfig').generate(
   this_library,
   filebase : meson.project_name(),
@@ -20,11 +21,13 @@ import('pkgconfig').generate(
   requires : requires_public,
   requires_private : requires_private,
   libraries_private : libraries_private,
+  variables : extra_pkg_config_variables,
 )
 
 meson.override_dependency(meson.project_name(), declare_dependency(
   include_directories : include_dirs,
   link_with : this_library,
   compile_args : ['-std=c++2a'],
   dependencies : deps_public_subproject + deps_public,
+  variables : extra_pkg_config_variables,
 ))

flake.nix

@@ -271,6 +271,7 @@
       devShells = let
         makeShell = pkgs: stdenv: (pkgs.nix.override { inherit stdenv; forDevShell = true; }).overrideAttrs (attrs:
         let
+          buildCanExecuteHost = stdenv.buildPlatform.canExecute stdenv.hostPlatform;
           modular = devFlake.getSystem stdenv.buildPlatform.system;
           transformFlag = prefix: flag:
             assert builtins.isString flag;
@@ -328,7 +329,7 @@
             ++ pkgs.nixComponents.nix-external-api-docs.nativeBuildInputs
             ++ pkgs.nixComponents.nix-functional-tests.baseNativeBuildInputs
             ++ lib.optional
-              (!stdenv.buildPlatform.canExecute stdenv.hostPlatform
+              (!buildCanExecuteHost
                  # Hack around https://github.com/nixos/nixpkgs/commit/bf7ad8cfbfa102a90463433e2c5027573b462479
                  && !(stdenv.hostPlatform.isWindows && stdenv.buildPlatform.isDarwin)
                  && stdenv.hostPlatform.emulatorAvailable pkgs.buildPackages

meson.build

@@ -3,7 +3,6 @@
 
 project('nix-dev-shell', 'cpp',
   version : files('.version'),
-  subproject_dir : 'src',
 )
 
 # Internal Libraries

misc/bash/meson.build

@@ -0,0 +1,8 @@
+configure_file(
+  input : 'completion.sh',
+  output : 'nix',
+  install : true,
+  install_dir : get_option('datadir') / 'bash-completion' / 'completions',
+  install_mode : 'rw-r--r--',
+  copy : true,
+)

misc/fish/meson.build

@@ -0,0 +1,8 @@
+configure_file(
+  input : 'completion.fish',
+  output : 'nix.fish',
+  install : true,
+  install_dir : get_option('datadir') / 'fish' / 'vendor_completions.d',
+  install_mode : 'rw-r--r--',
+  copy : true,
+)

misc/meson.build

@@ -0,0 +1,5 @@
+subdir('bash')
+subdir('fish')
+subdir('zsh')
+
+subdir('systemd')

misc/systemd/meson.build

@@ -0,0 +1,25 @@
+foreach config : [ 'nix-daemon.socket', 'nix-daemon.service' ]
+  configure_file(
+    input : config + '.in',
+    output : config,
+    install : true,
+    install_dir : get_option('prefix') / 'lib/systemd/system',
+    install_mode : 'rw-r--r--',
+    configuration : {
+      'storedir' : store_dir,
+      'localstatedir' : state_dir,
+      'bindir' : get_option('datadir'),
+    },
+  )
+endforeach
+
+configure_file(
+  input : 'nix-daemon.conf.in',
+  output : 'nix-daemon.conf',
+  install : true,
+  install_dir : get_option('prefix') / 'lib/tmpfiles.d',
+  install_mode : 'rw-r--r--',
+  configuration : {
+    'localstatedir' : state_dir,
+  },
+)

misc/zsh/meson.build

@@ -0,0 +1,10 @@
+foreach script : [ [ 'completion.zsh', '_nix' ], [ 'run-help-nix' ] ]
+  configure_file(
+    input : script[0],
+    output : script.get(1, script[0]),
+    install : true,
+    install_dir : get_option('datadir') / 'zsh/site-functions',
+    install_mode : 'rw-r--r--',
+    copy : true,
+  )
+endforeach

scripts/meson.build

@@ -0,0 +1,29 @@
+# configures `scripts/nix-profile.sh.in` (and copies the original to the build directory).
+# this is only needed for tests, but running it unconditionally does not hurt enough to care.
+configure_file(
+  input : 'nix-profile.sh.in',
+  output : 'nix-profile.sh',
+  configuration : {
+    'localstatedir': state_dir,
+  }
+)
+
+# https://github.com/mesonbuild/meson/issues/860
+configure_file(
+  input : 'nix-profile.sh.in',
+  output : 'nix-profile.sh.in',
+  copy : true,
+)
+
+foreach rc : [ '.sh', '.fish', '-daemon.sh', '-daemon.fish' ]
+  configure_file(
+    input : 'nix-profile' + rc  + '.in',
+    output : 'nix' + rc,
+    install : true,
+    install_dir : get_option('profile-dir'),
+    install_mode : 'rw-r--r--',
+    configuration : {
+      'localstatedir': state_dir,
+    },
+  )
+endforeach

src/libstore/meson.build

@@ -421,4 +421,9 @@ install_headers(headers, subdir : 'nix', preserve_path : true)
 
 libraries_private = []
 
+extra_pkg_config_variables = {
+  'localstatedir' : get_option('state-dir'),
+  'storedir' : get_option('store-dir'),
+}
+
 subdir('build-utils-meson/export')

src/nix/meson.build

@@ -16,9 +16,11 @@ cxx = meson.get_compiler('cpp')
 
 subdir('build-utils-meson/deps-lists')
 
+nix_store = dependency('nix-store')
+
 deps_private_maybe_subproject = [
   dependency('nix-util'),
-  dependency('nix-store'),
+  nix_store,
   dependency('nix-expr'),
   dependency('nix-flake'),
   dependency('nix-fetchers'),
@@ -244,3 +246,8 @@ custom_target(
 )
 # TODO(Ericson3214): Dosen't yet work
 #meson.override_find_program(linkname, t)
+
+state_dir = nix_store.get_variable('localstatedir')
+store_dir = nix_store.get_variable('storedir')
+subdir('scripts')
+subdir('misc')

src/nix/meson.options

@@ -0,0 +1,10 @@
+# vim: filetype=meson
+
+option('state-dir', type : 'string', value : '/nix/var',
+  description : 'path to store state in for Nix',
+)
+
+# A relative path means it gets appended to prefix.
+option('profile-dir', type : 'string', value : 'etc/profile.d',
+  description : 'the path to install shell profile files',
+)

src/nix/misc

@@ -0,0 +1 @@
+../../misc

src/nix/package.nix

@@ -36,9 +36,10 @@ mkMesonDerivation (finalAttrs: {
     ../../.version
     ./.version
     ./meson.build
-    # ./meson.options
+    ./meson.options
 
     # Symbolic links to other dirs
+    ## exes
     ./build-remote
     ./doc
     ./nix-build
@@ -48,6 +49,11 @@ mkMesonDerivation (finalAttrs: {
     ./nix-env
     ./nix-instantiate
     ./nix-store
+    ## dirs
+    ./scripts
+    ../../scripts
+    ./misc
+    ../../misc
 
     # Doc nix files for --help
     ../../doc/manual/generate-manpage.nix

src/nix/scripts

@@ -0,0 +1 @@
+../../scripts

subprojects

@@ -0,0 +1 @@
+src