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

1 files changed, 58 insertions, 153 deletions

diff --git a/org/config_nix.org b/org/config_nix.org
index dfbee32..a5b2839 100644
--- a/org/config_nix.org
+++ b/org/config_nix.org
@@ -239,47 +239,39 @@
 #+HEADER: :shebang "#!/usr/bin/env -S nix-shell --pure\n#!nix-shell -i bash"
 #+HEADER: :noweb yes
 #+BEGIN_SRC nix
-{pkgs ? import <nixpkgs> {}}:
+# Development environment for sisudoc-spine-samples.
+# Basic dev shell mirroring the flake's default devShell (`dsh`),
+# with the flake's default package (spine) built and put on PATH.
+#
+# Usage:
+#   nix-shell                         # enters shell, builds spine via the flake
+#   nix-shell --run 'spine --version' # runs spine after build
+#
+# Requires: experimental-features = nix-command flakes
+{
+  pkgs ? import <nixpkgs> {},
+  flake ? builtins.getFlake (toString ./.),
+  # captured at eval time - nix-shell rewrites $SHELL at runtime,
+  # so we must remember the user's real login shell here.
+  userShell ? builtins.getEnv "SHELL",
+}:
+let
+  spine = flake.packages.${pkgs.stdenv.hostPlatform.system}.default;
+in
 with pkgs;
   mkShell {
-    buildInputs = [
-      # ❯❯❯ nix_related
-      ##nix
-      #direnv
-      #nix-direnv
-      #nixVersions.latest #nixVersions.latest #nixVersions.git
-      #nix-prefetch-git
-      #validatePkgConfig
-      nix-output-monitor
-      #nix-tree
-      #jq
-      #nixfmt-rfc-style
-      #git
-      # ❯❯❯ dev
-      #gnumake
-      #ps
+    name = "spine base dev shell";
+    packages = [
+      # ❯❯❯ flake default build (spine binary)
+      spine
       # ❯❯❯ d_build_related
-      # ❯❯ package manager
-      #dub
-      # ❯❯ compiler
+      ldc
       #dmd
-      #ldc
-      #rund
-      # ❯❯ linker
-      #lld
-      #mold
-      # ❯❯ builder
-      #ninja
-      #meson
-      # ❯❯ tools
-      #dtools
+      dub
+      # ❯❯❯ dev
+      gnumake
       # ❯❯❯ 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
@@ -291,85 +283,40 @@ with pkgs;
       # calibre #(suite includes: ebook-viewer)
       # koreader
       # foliate
+      # ❯❯❯ pdf reader
+      # evince
       # ❯❯❯ i18n translation related
       # perlPackages.Po4a
     ];
     shellHook = ''
+      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:
-
-nix profile install .
-
-#+HEADER: :tangle ../devenv.nix
-#+HEADER: :tangle-mode (identity #o644)
-#+BEGIN_SRC nix
-{
-  pkgs ? import <nixpkgs> {},
-  name ? "user-env",
-}:
-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
-      # ❯❯❯ 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;
-      })
-    ];
-  }
-#+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
 {
@@ -467,10 +414,13 @@ with (
   mkDubDerivation rec {
     pname = "spine";
     version = "<<spine_version>>";
-    #zipfile = "spine-0.12.0-tag-0.11.2.r107.gf89a107.tar.gz";
-    src = fetchTarball {
-      url = "<<spine_tarball_path_url>>";
-      sha256 = "<<spine_tarball_sha256>>";
+    # fetched from the same upstream the flake's `inputs.spine` points at
+    # (git://git.sisudoc.org/software/sisudoc-spine). Unlike flake inputs,
+    # builtins.fetchGit is usable from a plain (non-flake) derivation.nix.
+    src = builtins.fetchGit {
+      url = "git://git.sisudoc.org/software/sisudoc-spine";
+      ref = "main";
+      shallow = true;
     };
     nativeBuildInputs = with pkgs; [dub ldc];
     buildInputs = with pkgs; [nixVersions.latest sqlite];
@@ -493,46 +443,6 @@ with (
 /srv/www/spine
 #+END_SRC
 
-#+NAME: spine_tarball_path
-#+HEADER: :noweb yes
-#+BEGIN_SRC nix
-/home/ralph/grotto/repo/git.repo/projects/doc-reform/code/software/tarball
-#+END_SRC
-
-#+NAME: spine_tarball_path_url
-#+HEADER: :noweb yes
-#+BEGIN_SRC nix
-file://<<spine_tarball_path>>/<<spine_tarball_filename>>
-#+END_SRC
-
-#+NAME: spine_git_file_path
-#+HEADER: :noweb yes
-#+BEGIN_SRC nix
-/home/ralph/grotto/repo/git.repo/projects/doc-reform/code/software/sisudoc-spine
-#+END_SRC
-
-#+NAME: nixpkgs_local
-#+BEGIN_SRC shell
-/srv/nixpkgs-dev/nixpkgs
-#+END_SRC
-
-#+NAME: spine_git_file_path_url
-#+HEADER: :noweb yes
-#+BEGIN_SRC nix
-git+file://<<spine_git_file_path>>
-#+END_SRC
-
-#+NAME: spine_tarball_filename
-#+HEADER: :noweb yes
-#+BEGIN_SRC nix
-spine-0.12.0-tag-0.11.2.r107.gf89a107.tar.gz
-#+END_SRC
-
-#+NAME: spine_tarball_sha256
-#+HEADER: :noweb yes
-#+BEGIN_SRC nix
-sha256:03dr7dn7kq6arw4ry7qar13iqmi1caw70imfjwi8qr7g2j4mnk2q
-#+END_SRC
 
 #+NAME: project_path_local_out_static_
 #+BEGIN_SRC nix
@@ -557,11 +467,6 @@ github:NixOS/nixpkgs/nixpkgs-unstable
 "nixpkgs/nixos-unstable";
 #+END_SRC
 
-#+HEADER: :noweb yes
-#+BEGIN_SRC nix
-<<nixpkgs_path_local>>
-#+END_SRC
-
 * SHARED
 ** version and other things shared
 *** spine project VERSION :version:set:project: