diff --git a/home/common/.direnvrc b/home/common/.direnvrc new file mode 100644 index 0000000..3df1010 --- /dev/null +++ b/home/common/.direnvrc @@ -0,0 +1,62 @@ +use_nix() { + local path="$(nix-instantiate --find-file nixpkgs)" + + if [ -f "${path}/.version-suffix" ]; then + local version="$(< $path/.version-suffix)" + elif [ -f "${path}/.git" ]; then + local version="$(< $(< ${path}/.git/HEAD))" + fi + + local cache=".direnv/cache-${version:-unknown}" + + local update_drv=0 + if [[ ! -e "$cache" ]] || \ + [[ "$HOME/.direnvrc" -nt "$cache" ]] || \ + [[ .envrc -nt "$cache" ]] || \ + [[ default.nix -nt "$cache" ]] || \ + [[ shell.nix -nt "$cache" ]]; + then + [ -d .direnv ] || mkdir .direnv + nix-shell --show-trace --pure "$@" --run "\"$direnv\" dump bash" > "$cache" + update_drv=1 + else + log_status using cached derivation + fi + local term_backup=$TERM path_backup=$PATH + if [ -n ${TMPDIR+x} ]; then + local tmp_backup=$TMPDIR + fi + + eval "$(< $cache)" + export PATH=$PATH:$path_backup TERM=$term_backup TMPDIR=$tmp_backup + if [ -n ${tmp_backup+x} ]; then + export TMPDIR=${tmp_backup} + else + unset TMPDIR + fi + + # `nix-shell --pure` sets invalid ssl certificate paths + if [ "${SSL_CERT_FILE:-}" = /no-cert-file.crt ]; then + unset SSL_CERT_FILE + fi + if [ "${NIX_SSL_CERT_FILE:-}" = /no-cert-file.crt ]; then + unset NIX_SSL_CERT_FILE + fi + + # This part is based on https://discourse.nixos.org/t/what-is-the-best-dev-workflow-around-nix-shell/418/4 + if [ "$out" ] && (( $update_drv )); then + local drv_link=".direnv/drv" + local drv="$(nix show-derivation $out | grep -E -o -m1 '/nix/store/.*.drv')" + local stripped_pwd=${PWD/\//} + local escaped_pwd=${stripped_pwd//-/--} + local escaped_pwd=${escaped_pwd//\//-} + ln -fs "$drv" "$drv_link" + ln -fs "$PWD/$drv_link" "/nix/var/nix/gcroots/per-user/$LOGNAME/$escaped_pwd" + log_status renewed cache and derivation link + fi + + if [[ $# = 0 ]]; then + watch_file default.nix + watch_file shell.nix + fi +} diff --git a/home/common/direnv.nix b/home/common/direnv.nix new file mode 100644 index 0000000..ee3d9a2 --- /dev/null +++ b/home/common/direnv.nix @@ -0,0 +1,15 @@ +{ config, pkgs, ... }: + +with pkgs; +{ + programs.direnv = { + enable = true; + enableBashIntegration = true; + enableFishIntegration = true; + stdlib = builtins.readFile ./.direnvrc; + }; + + home.file.".envrc".text = '' + dotenv + ''; +} diff --git a/home/felschr-work.nix b/home/felschr-work.nix index c7b3753..a1cc248 100644 --- a/home/felschr-work.nix +++ b/home/felschr-work.nix @@ -4,6 +4,7 @@ with pkgs; { imports = [ ./common/sh.nix + ./common/direnv.nix ./common/mimeapps.nix ./common/gui.nix ./common/gnome.nix @@ -34,6 +35,7 @@ with pkgs; enable = true; userName = "Felix Schroeter"; userEmail = "fs@upsquared.com"; + ignores = [".direnv"]; }; programs.firefox.enable = true;