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diff --git a/org/config_env.org b/org/config_env.org
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+-*- mode: org -*-
+#+TITLE:       configuration env
+#+DESCRIPTION: env envrc used by make & nix
+#+FILETAGS:    :sisu:build:tools:
+#+AUTHOR:      Ralph Amissah
+#+EMAIL:       [[mailto:ralph.amissah@gmail.com][ralph.amissah@gmail.com]]
+#+COPYRIGHT:   Copyright (C) 2015 - 2023 Ralph Amissah
+#+LANGUAGE:    en
+#+STARTUP:     content hideblocks hidestars noindent entitiespretty
+#+PROPERTY:    header-args  :exports code
+#+PROPERTY:    header-args+ :noweb yes
+#+PROPERTY:    header-args+ :results no
+#+PROPERTY:    header-args+ :cache no
+#+PROPERTY:    header-args+ :padline no
+#+PROPERTY:    header-args+ :mkdirp yes
+#+OPTIONS:     H:3 num:nil toc:t \n:t ::t |:t ^:nil -:t f:t *:t
+
+- [[./doc-reform.org][doc-reform.org]]  [[../org/][org/]]
+- [[./config_nix.org][config_nix.org]]
+- [[./config_make.org][config_make.org]]
+
+* envrc
+** nixDevEnv envrc :envrc:
+
+#+HEADER: :tangle ../nixDevEnv.sh
+#+BEGIN_SRC sh
+if [ -f .envrc ]; then
+  source_env_if_exists .envrc || source .envrc
+fi
+#+END_SRC
+
+** envrc :envrc:
+*** .envrc
+
+- https://github.com/nix-community/nix-direnv
+  - source_url "https://raw.githubusercontent.com/nix-community/nix-direnv/${NixDirEnvVersion}/direnvrc" "sha256-0000000000000000000000000000000000000000000="
+
+#+NAME: envrc
+#+HEADER: :tangle ../.envrc
+#+BEGIN_SRC sh
+if [ -f .envrc-git-init ]; then
+  source_env_if_exists .envrc-git-init || source .envrc-git-init
+fi
+if [ -f .envrc-local ]; then
+  source_env_if_exists .envrc-local || source .envrc-local
+fi
+if [ -f .envrc-nix ]; then
+  source_env_if_exists .envrc-nix || source .envrc-nix
+fi
+#+END_SRC
+
+*** .envrc-nix
+
+- https://github.com/nix-community/nix-direnv
+  - source_url
+    - direnv fetchurl "https://raw.githubusercontent.com/nix-community/nix-direnv/<<direnv-version>>/direnvrc" "<<direnv-sha>>"
+    - ${NixDirEnvVersion}
+
+#+HEADER: :tangle ../.envrc-nix
+#+BEGIN_SRC sh
+NIX_ENFORCE_PURITY=1
+# - https://github.com/nix-community/nix-direnv
+NixDirEnvVersion="<<direnv-version>>"
+NixDirEnvSHA="<<direnv-sha>>"
+if ! has nix_direnv_version || ! nix_direnv_version ${NixDirEnvVersion}; then
+  source_url "https://raw.githubusercontent.com/nix-community/nix-direnv/${NixDirEnvVersion}/direnvrc" "${NixDirEnvSHA}"
+fi
+watch_file flake.lock
+watch_file flake.nix
+watch_file shell.nix
+watch_file makefile
+watch_file nixDevEnv.sh
+watch_file .envrc-local
+watch_file .envrc-nix
+PATH_add result/bin
+use flake .
+echo "
+- consider running:
+  ❯❯ nix flake show
+  ❯❯ nix flake update && nix flake check && nix flake show
+
+- for a dev shell:
+  ❯❯ nix develop
+  ❯❯ nix develop ".#" --print-build-logs -c zsh
+  ❯❯ nix develop ".#dsh-latex-pdf" --print-build-logs -c zsh
+
+- to build project:
+  ❯❯ nix build ".#" --print-build-logs
+  - (see nix other/additional build options):
+    ❯❯ nix flake show
+"
+#+END_SRC
+
+*** 3.0.0
+
+#+NAME: direnv-version
+#+BEGIN_SRC sh
+3.0.0
+#+END_SRC
+
+#+NAME: direnv-sha
+#+BEGIN_SRC sh
+sha256-21TMnI2xWX7HkSTjFFri2UaohXVj854mgvWapWrxRXg=
+#+END_SRC
+
+*** 2.4.0
+
+#+BEGIN_SRC sh
+2.4.0
+#+END_SRC
+
+#+BEGIN_SRC sh
+sha256-XQzUAvL6pysIJnRJyR7uVpmUSZfc7LSgWQwq/4mBr1U=
+#+END_SRC
+
+#+BEGIN_SRC sh
+2.3.0
+#+END_SRC
+
+#+BEGIN_SRC sh
+sha256-Dmd+j63L84wuzgyjITIfSxSD57Tx7v51DMxVZOsiUD8=
+#+END_SRC
+
+#+NAME: direnv-sha_
+#+BEGIN_SRC sh
+sha256-0000000000000000000000000000000000000000000=
+#+END_SRC
+
+#+BEGIN_SRC sh
+- https://github.com/nix-community/nix-direnv
+NixDirEnvSHA="sha256-0000000000000000000000000000000000000000000="
+direnv fetchurl https://raw.githubusercontent.com/nix-community/nix-direnv/${NixDirEnvVersion}/direnvrc
+#+END_SRC
+
+** .envrc-git-init
+
+#+HEADER: :tangle ../.envrc-git-init
+#+HEADER: :noweb yes
+#+BEGIN_SRC sh
+if [[ ! -d ./.git ]]; then
+  git init
+  git add .
+fi
+#+END_SRC
+
+** .envrc-local CHECK MODIFY
+
+- bespoke modify appropriately and generate if needed
+
+#+HEADER: :tangle ../.envrc-local_
+#+HEADER: :noweb yes
+#+BEGIN_SRC sh
+export DFLAGS="-O2 -inline -boundscheck=on -color=on"
+export SpineVER=$(git describe --long --tags | sed 's/^[ a-z_-]\+\([0-9.]\+\)/\1/;s/\([^-]*-g\)/r\1/;s/-/./g')
+export SpineBIN=result/bin
+export SpinePROJ=~/grotto/repo/git.repo/projects/doc-reform/code/software/spine
+export SpineDOC=~/grotto/repo/git.repo/projects/project-spine/doc-reform-markup/spine-markup-samples
+export SpinePOD=${SpineDOC}/markup/pod
+export SpineOUT=/srv/www/spine
+export SpineOUTversioned=/srv/www/spine/${SpineVER}
+export SpineSearchActionLocal='http://localhost/spine_search'
+export SpineSearchActionRemote='https://sisudoc.org/spine_search'
+export SpineCGIform='spine_search'
+export SpineSQLdb='spine.search.db'
+export SpineCGIbin=/var/www/cgi/cgi-bin
+export SpineDBpath=/var/www/sqlite
+#export SpineDBpath=/srv/www/spine/sqlite
+#+END_SRC
+
+#+HEADER: :tangle-NO ../.envrc-local
+#+HEADER: :noweb yes
+#+BEGIN_SRC sh
+if [[ ! -d ./.git ]]; then
+  git init
+  git add .
+fi
+echo '
+  .envrc-local echo ❯❯
+
+  ❯❯ nix flake update && nix flake check --show-trace && nix flake show && nix develop ".#devShell" -c $SHELL
+
+  ❯❯ nix develop
+  ❯❯ nix develop -c $SHELL
+  ❯❯ nix develop ".#dsh-overlay-ldc" --print-build-logs
+
+  ❯❯ nix build
+  ❯❯ nix build ".#default" --print-build-logs
+'
+#+END_SRC
+
+#+BEGIN_SRC sh
+#export NIX_PATH=/nix/var/nix/profiles/per-user/root/channels/nixos
+#export NIX_PATH=/srv/nix/nixpkgs
+#export NIX_PATH=nixpkgs=/srv/nix/nixpkgs
+#+END_SRC
+
+*** .envrc-local CHECK MODIFY
+
+- bespoke modify appropriately and generate if needed
+
+#+HEADER: :tangle ../.envrc-local_
+#+HEADER: :noweb yes
+#+BEGIN_SRC sh
+export NIX_PATH=/nix/var/nix/profiles/per-user/root/channels/nixos
+#export NIX_PATH=nixpkgs=/nixpkgs-ra/nixpkgs
+## reload when these files change
+use flake
+watch_file flake.nix
+#eval "$(nix print-dev-env)"
+export sisuVER=$(git describe --long --tags | sed 's/^[ a-z_-]\+\([0-9.]\+\)/\1/;s/\([^-]*-g\)/r\1/;s/-/./g')
+#export sisuBIN=bin
+export sisuSRC=~/grotto/repo/git.repo/projects/project-sisu/sisu
+export sisuDOC=~/grotto/repo/git.repo/projects/project-sisu/susu-markup/sisu-markup-samples/data/samples/current
+export sisuOUT=/var/www
+export sisuOUTver=/tmp/sisu/$sisuVER/www
+export RUBYLIB+=`pwd`/lib
+#+END_SRC
+
+#+BEGIN_SRC sh
+ export Date=`date "+%Y%m%d"`
+ export sisuver=$(git describe --long --tags | sed 's/^[ a-z_-]\+\([0-9.]\+\)/\1/;s/\([^-]*-g\)/r\1/;s/-/./g')
+ ### set local values in .envrc-local (or modify here if you must)
+ # export sisuPROJ=~/grotto/repo/git.repo/projects/doc-reform/code/software/sisu
+ # export sisuDOC=~/grotto/repo/git.repo/projects/project-sisu/doc-reform-markup/sisu-markup-samples
+ # export sisuSRC=~/grotto/repo/git.repo/projects/project-sisu/sisu
+ # export sisuDOC=~/grotto/repo/git.repo/projects/project-sisu/susu-markup/sisu-markup-samples/data/samples/current
+ # export sisuOUT=/srv/www/sisu
+ # export sisuOUTver=/srv/www/sisu/$sisuVER/www
+ # export sisu=/srv/www/sisu
+ # export sisu=/var/www/sqlite
+ # export sisu=/srv/www/sisu/sqlite
+ export sisu=$sisuPROJ/src
+ export sisu=$sisuPROJ/result/lib
+ export sisu=$sisuDOC/markup/pod
+ export sisu=$sisuOUT/$sisuVER
+ export sisu='http://localhost/sisu_search'
+ # export sisuSearchActionRemote='https://sisudoc.org/sisu_search'
+ export sisuCGIform='sisu_search'
+ export sisuSQLdb='sisusearch.db'
+ export PROG_VER_GIT="`git describe --long --tags | sed -e 's/^[ a-z_-]\+\([0-9.]\+\)/\1/;s/\([^-]*-g\)/r\1/;s/-/./g'`"
+ #export PROG_VER_DECLARED="`cat ./views/version.txt | grep --color=never "enum" | sed 's/.\+(\([0-9]\+\),[ \t]\+\([0-9]\+\),[ \t]\+\([0-9]\+\)[ \t]*).\+/\1.\2.\3/g'`"
+ export sisuNixHelp="cat ./.env/nix-commands"
+ export sisuTest="nix shell .#default --print-build-logs --command sisu --very-verbose --epub --html --html-link-search --html-link-curate --curate --output=\"\$sisuOUT\" $sisuPOD/*"
+ export sisuHtml="sisu --very-verbose --html --html-link-search --html-link-curate --curate --sqlite-update --sqlite-db-filename=\"sisu.search.db\" --cgi-sqlite-search-filename=\"sisu_search\" --sqlite-db-path=\"\$sisuDBpath\" --output=\"\$sisuOUT\" $sisuPOD/*"
+ export sisuEpub="sisu --very-verbose --epub --output=\"\$sisuOUT\" $sisuPOD/*"
+ export sisuLatex="sisu --very-verbose --latex --output=\"\$sisuOUT\" $sisuPOD/*"
+ export sisuPdf="sisu --very-verbose --pdf --output=\"\$sisuOUT\" $sisuPOD/*"
+ export sisuSqliteCreateDB="sisu --very-verbose --sqlite-db-recreate --sqlite-db-path=\"$sisuDBpath\" --sqlite-db-filename=\"sisu.search.db\""
+ export sisuSqlite="sisu --very-verbose --sqlite-discrete --sqlite-db-path=\"$sisuDBpath\" --sqlite-db-filename=\"sisu.search.db\" --output=\"\$sisuOUT\" $sisuPOD/*"
+ #export sisuSqlite="sisu --very-verbose --sqlite-update --sqlite-db-path=\"$sisuDBpath\" --sqlite-db-filename=\"sisu.search.db\" --output=\"\$sisuOUT\" $sisuPOD/*"
+#+END_SRC
+
+