nix keeping: nix-shell, nix-build derivation.nix

2 files changed, 130 insertions, 102 deletions

diff --git a/org/config_misc.org b/org/config_misc.org
index 24eda02..675ac75 100644
--- a/org/config_misc.org
+++ b/org/config_misc.org
@@ -23,7 +23,7 @@ babel tangle) org files in ./org/ to create .d source files in ./src/sisudoc/
 (similar functionality is contained within the "makefile" created by this
 "dr_build_scaffold.org" file make tangle)
 
-#+HEADER: :tangle ../tangle
+#+HEADER: :tangle-NO ../tangle
 #+HEADER: :tangle-mode (identity #o755)
 #+HEADER: :shebang "#!/bin/sh"
 #+BEGIN_SRC shell
diff --git a/org/config_nix.org b/org/config_nix.org
index eba0917..a7206e2 100644
--- a/org/config_nix.org
+++ b/org/config_nix.org
@@ -162,7 +162,8 @@
       pkgs-ovl = pkgsForSystem system;
       pkgs-nix = nixpkgsFor.${system};
     in {
-      default = import ./shell.nix {inherit pkgs-nix;};
+      default = self.devShells.${system}.dsh-overlay;
+      #default = import ./shell.nix {pkgs = pkgs-nix; flake = self;};
       dsh-overlay = mkDevShell {
         pkgs = pkgs-ovl;
         # "spine-<<spine_version>> base dev shell, ldc-<<ldc_version>>, dub-<<dub_version>> - dtools-<<dtools_version>>";
@@ -260,45 +261,44 @@
 #+HEADER: :shebang "#!/usr/bin/env -S nix-shell --pure\n#!nix-shell -i bash"
 #+HEADER: :noweb yes
 #+BEGIN_SRC nix
-{pkgs-nix ? import <nixpkgs> {}}:
-with pkgs-nix;
+# Development environment for sisudoc-spine.
+# Builds the spine binary via ./package.nix and puts it on PATH.
+#
+# Build logic for the spine derivation lives in ./package.nix
+# this file only describes the dev shell.
+#
+# Usage:
+#   nix-shell                         # enters shell, builds spine
+#   nix-shell --run 'spine --version' # runs spine after build
+{
+  pkgs ? import <nixpkgs> {},
+  spine ? pkgs.callPackage ./package.nix {},
+  # captured at eval time - nix-shell rewrites $SHELL at runtime,
+  # so we must remember the user's real login shell here.
+  userShell ? builtins.getEnv "SHELL",
+}:
+with pkgs;
   mkShell {
-    buildInputs = [
+    name = "spine base dev shell";
+    packages = [
+      # ❯❯❯ spine binary built from ./package.nix
+      spine
+      # ❯❯❯ d_build_related
+      ldc
+      #dmd
+      dub
+      # ❯❯❯ dev
+      gnumake
+      git
       # ❯❯❯ nix_related
-      #nix
       direnv
       nix-direnv
-      nixVersions.latest #nixVersions.latest #nixVersions.git
       nix-prefetch-git
-      validatePkgConfig
       nix-output-monitor
       nix-tree
-      jq #gx
-      #nixfmt-rfc-style
-      git
-      # ❯❯❯ dev
-      gnumake
-      #ps
-      # ❯❯❯ d_build_related
-      # ❯❯ package manager
-      #dub
-      # ❯❯ compiler
-      #dmd
-      #ldc
-      #rund
-      # ❯❯ linker
-      #lld
-      #mold
-      # ❯❯ builder
-      #ninja
-      #meson
+      jq
       # ❯❯❯ sqlite search related
-      #sqlite
-      # ❯❯❯ pdf_latex_related
-      # source-sans-pro
-      # source-serif-pro
-      # source-code-pro
-      # texlive.combined.scheme-full
+      sqlite
       # ❯❯❯ xml_and_epub_related
       # libxml2
       # html-tidy
@@ -310,93 +310,121 @@ with pkgs-nix;
       # calibre #(suite includes: ebook-viewer)
       # koreader
       # foliate
+      # ❯❯❯ pdf reader
+      # evince
+      # ❯❯❯ pdf_latex_related
+      # source-sans-pro
+      # source-serif-pro
+      # source-code-pro
+      # texlive.combined.scheme-full
       # ❯❯❯ i18n translation related
       # perlPackages.Po4a
-      # ❯❯❯ dev
-      # openssl_3_3
     ];
     shellHook = ''
-      echo '❯❯ nix build';
-      SpineGitVer=`git describe | sed "s/^[a-z_-]\+\([0-9.]\+\)/\1/" | sed "s/\([^-]*-g\)/r\1/" | sed "s/-/./g"` && \
-      SpineGitBranch=`git branch --show-current` && \
-      echo "❯❯ spine - ($SpineGitBranch: $SpineGitVer)"
-      echo '❯❯ $SpineBIN -v --source --pod --text --epub --html --html-link-pdf --html-link-curate --html-link-markup --curate --output=$SpineOUT  $SpinePOD/*';
-      echo "❯❯ $SpineBIN -v --source --pod --text --epub --html --html-link-pdf --html-link-curate --html-link-markup --curate --output=$SpineOUT  $SpinePOD/*";
-      echo '❯❯ nix flake update && nix flake check && nix flake show';
+      export DFLAGS="-O2 -boundscheck=on"
+      export Date=$(date "+%Y%m%d")
+      ## set local values in .envrc-local (or here if you must)
+      echo "spine: $(command -v spine)"
+      ## hand off to the user's login shell (e.g. zsh) only when this is
+      ## an interactive nix-shell entry - not under `nix-shell --run` or
+      ## `--command`, where exec would swallow the command. Guard env var
+      ## prevents re-entry loops.
+      __spine_user_shell=${if userShell == "" then "" else "\"" + userShell + "\""}
+      if [ -z "$__SPINE_SHELL_HANDOFF" ] \
+         && [ -n "$__spine_user_shell" ] \
+         && [ "$(basename "$__spine_user_shell")" != "bash" ] \
+         && [[ $- == *i* ]]; then
+        export __SPINE_SHELL_HANDOFF=1
+        spine --version
+        exec "$__spine_user_shell"
+      fi
+      unset __spine_user_shell
+      spine --version
     '';
   }
 #+END_SRC
 
-** default.nix :default:
-
-#+HEADER: :tangle ../default.nix
-#+HEADER: :tangle-mode (identity #o755)
-#+HEADER: :shebang "#!/usr/bin/env -S nix-build"
-#+BEGIN_SRC nix
-{pkgs ? import <nixpkgs> {}}:
-pkgs.callPackage ./devenv.nix {}
-#+END_SRC
-
-* devEnv
-** devenv.nix :default:devenv:
+** package.nix :default:
 
-#+HEADER: :tangle ../devenv.nix
+#+HEADER: :tangle ../package.nix
 #+HEADER: :tangle-mode (identity #o644)
+#+HEADER: :noweb yes
 #+BEGIN_SRC nix
+# package.nix - spine derivation (build logic)
+#
+# Standalone, callPackage-style derivation for the spine binary. Used by
+# shell.nix to put a freshly-built spine on PATH inside the dev shell.
+# May also be consumed via:
+#   nix-build ./package.nix
+#   pkgs.callPackage ./package.nix {}
+#
+# Compiler defaults to ldc/ldmd2 (matching the flake's default package
+# `spine-nixpkgs-ldc`). Override to build with dmd:
+#   pkgs.callPackage ./package.nix {
+#     compilerPkg = pkgs.dmd;
+#     compilerBin = "dmd";
+#     buildType   = "dmd";
+#   }
 {
-  pkgs ? import <nixpkgs> {},
-  name ? "user-env",
+  lib,
+  stdenv,
+  dub,
+  ldc,
+  gnumake,
+  sqlite,
+  compilerPkg ? ldc,
+  compilerBin ? "ldmd2",
+  buildType   ? "ldmd2",
+  rev         ? "unknown",
 }:
-with pkgs;
-  buildEnv {
-    inherit name;
-    extraOutputsToInstall = ["out" "man" "lib"]; # to get all needed symlinks
-    paths = [
-      # ❯❯❯ nix_related
-      #nix # if not on NixOS, this is needed
-      direnv
-      nix-direnv
-      nixVersions.latest #nixVersions.latest #nixVersions.git
-      nix-prefetch-git
-      validatePkgConfig
-      nix-output-monitor
-      nix-tree
-      jq #gx
-      #nixfmt-rfc-style
-      git
-      # ❯❯❯ dev
-      gnumake
-      ps
-      dtools
-      # ❯❯❯ d_build_related
-      # ❯❯ package manager
-      dub
-      # ❯❯ compiler
-      #dmd
-      ldc
-      # ❯❯❯ sqlite search related
-      sqlite
-      # this will create a script that will rebuild and upgrade your setup; using shell script syntax
-      (writeScriptBin "nix-rebuild" ''
-        #!${stdenv.shell}
-        #cd <path-to-flake> || exit 1
-        nix flake update
-        nix profile upgrade '.*'
-      '')
-      # puts in your root the nixpkgs version
-      (writeTextFile {
-        name = "nixpkgs-version";
-        destination = "/nixpkgs-version";
-        text = lib.version;
-      })
-    ];
-  }
+stdenv.mkDerivation {
+  pname   = "spine";
+  version = "<<spine_version>>";
+  src     = lib.cleanSource ./.;
+  buildInputs       = [ sqlite ];
+  nativeBuildInputs = [ dub compilerPkg gnumake ];
+  preBuild = ''
+    export HOME=$TMPDIR
+  '';
+  buildPhase = ''
+    runHook preBuild
+    buildCMD="dub run --cache=local --compiler=$(type -P ${compilerBin}) --build=${buildType} --combined --skip-registry=all"
+    echo $buildCMD
+    $buildCMD
+    runHook postBuild
+  '';
+  checkPhase = ''
+    runHook preCheck
+    dub test --combined --skip-registry=all
+    runHook postCheck
+  '';
+  installPhase = ''
+    runHook preInstall
+    mkdir -p $out/bin
+    install -m755 ./bin/spine $out/bin/spine
+    runHook postInstall
+  '';
+  postInstall = ''
+    echo `ls -la $out/bin/spine`
+    echo "❯❯ spine-v0.18.0 (rev: ${rev})"
+    $out/bin/spine -v
+  '';
+  meta = {
+    description     = "A sisu like parser & document generator";
+    longDescription = "a sisu like parser & document generator";
+    homepage        = "https://sisudoc.org";
+    license         = lib.licenses.agpl3Plus;
+    platforms       = lib.platforms.linux;
+    mainProgram     = "spine";
+  };
+}
 #+END_SRC
 
 ** derivation.nix :default:
 
 #+HEADER: :tangle ../derivation.nix
-#+HEADER: :tangle-mode (identity #o644)
+#+HEADER: :tangle-mode (identity #o755)
+#+HEADER: :shebang "#!/usr/bin/env -S nix-build derivation.nix"
 #+HEADER: :noweb yes
 #+BEGIN_SRC nix
 {