Add base ssh config

Signed-off-by: Guillaume J. Charmes <guillaume+github@charmes.net>

.ssh/config

@@ -0,0 +1,5 @@
+Include ~/.ssh/config.private
+
+Host *
+     AddKeysToAgent yes
+     ForwardAgent   yes

.ssh/config.private

@@ -0,0 +1,7 @@
+# -*- mode: conf -*-
+
+# Host *.testvms.local
+#      IdentityFile          ~/.ssh/id_rsa2
+#      StrictHostKeyChecking no
+#      UserKnownHostsFile    /dev/null
+#      User                  johndoe

Makefile

@@ -1,39 +1,84 @@
-HOME  ?= $(shell [ -d "/Users/$$(whoami)" ] && echo /Users/$$(whoami) || echo /home/$$(whoami))
-PWD   ?= $(shell pwd)
-SRCS   = .editorconfig     \
-         .emacs            \
-         .emacs.files      \
-         .config           \
-         .gitconfig        \
-         .gitconfig.perso  \
-         .tmux.conf        \
-         .zshrc
-LINKS  = $(addprefix ${HOME}/, $(SRCS))
-
-# Default to install_dotfiles target.
-all: install_dotfiles
+USER ?= $(shell whoami)
+HOME ?= $(shell [ -d "/Users/${USER}" ] && echo /Users/${USER} || echo /home/${USER})
+PWD  ?= $(shell pwd)
+
+LINKS_SRCS    = .editorconfig     \
+                .emacs.files      \
+                .config           \
+                .gitconfig        \
+                .gitconfig.perso  \
+                .tmux.conf        \
+                .zshrc \
+                .ssh/config
+LINKS_TARGETS = ${LINKS_SRCS:%=${HOME}/%}
+LINKS_CLEAN   = ${LINKS_SRCS:%=clean_link_%}
+
+# List of file/dirs to nuke when calling 'make purge'.
+PURGE_LIST = .cache .emacs.d .yarn .npm .node-gyp .elinks .apex .terraform.d .parallel \
+             .psql_history .python_history .wget-hsts .node_repl_history \
+             .yarnrc .zcompdump* .sudo_as_admin_successful \
+             ${PWD}/.config/yarn
+
+# Default to install target.
+all: install
 
 # Install oh-my-zsh if not installed.
+# Use anonymous@ to avoid matching any existing insteadOf url config.
 ${HOME}/.oh-my-zsh:
-	@git clone 'https://github.com/robbyrussell/oh-my-zsh' ~/.oh-my-zsh
+	@[ -d $@ ] && (cd $@ && git pull) || git clone https://anonymouse@github.com/robbyrussell/oh-my-zsh $@
 
-# One target per link.
-${LINKS}: $(@F)
-	ln -s $(PWD)/$(@F) $@
+# Install nvm so it is around when needed.
+${HOME}/.nvm:
+	@[ -d $@ ] && (cd $@ && git pull) || git clone https://anonymouse@github.com/nvm-sh/nvm $@
 
-# Main target for dotfiles.
-install_dotfiles: ${HOME}/.oh-my-zsh ${LINKS}
+# Don't symlink .emacs as it gets rewritten all the time by emacs and only improts files from .emacs.file.
+${HOME}/.emacs: .emacs
+	@cp $< $@
 
-# Uninstall oh-my-zsh.
-clean_oh-my-zsh:
-	@rm -rf ${HOME}/.oh-my-zsh
+# Place symlink from home to here.
+${HOME}/%: ${PWD}/%
+	ln -f -s $< $@
 
-# Uninstall dotfiles.
-clean_dotfiles: clean_oh-my-zsh
-	@rm -f ${LINKS}
+# Make sure we have a ~/.ssh dir for linkink ~/.ssh/config
+# If ~/.ssh/.ssh/config.private does not exist, copy the template.
+${HOME}/.ssh/config: ${PWD}/.ssh/config
+	@mkdir -p $(dir $@)
+	@[ -f ${HOME}/.ssh/config.private ] || cp ${PWD}/.ssh/config.private ${HOME}/.ssh/config.private
+	ln -f -s $< $@
 
-# Main uninstall target.
-clean: clean_dotfiles
+# Enable xterm-truecolor support.
+${HOME}/.terminfo/x/xterm-truecolor: xterm-truecolor.terminfo
+	tic -x -o ${HOME}/.terminfo $<
+
+# Cleanup.
+# Not using % to avoid bad things if $* is missing (i.e. rm -rf ${HOME}/).
+clean_.oh-my-zsh:
+	rm -rf ${HOME}/.oh-my-zsh
+clean_.nvm:
+	rm -rf ${HOME}/.nvm
+clean_file_%: # Safe here to be generic as we don't have '-r'.
+	rm -f ${HOME}/$*
+# Remove the symlinks only if they are still symlink.
+clean_link_%:
+	@[ -L ${HOME}/$* ] && rm ${HOME}/$* || true
+clean_link_.ssh/config:
+	@[ -L ${HOME}/.ssh/config ] && rm ${HOME}/.ssh/config || true
+# Remove .terminfo only if xterm-truecolor was the only entry.
+clean_.terminfo: clean_file_.terminfo/x/xterm-truecolor
+	@mkdir -p ${HOME}/.terminfo/x
+	rmdir --ignore-fail-on-non-empty ${HOME}/.terminfo/x ${HOME}/.terminfo
+clean_file_.terminfo/x/xterm-truecolor:
+	rm -f ${HOME}/.terminfo/x/xterm-truecolor
 
 # Phony targets.
-.PHONY: all install_dotfiles clean clean_dotfiles clean_oh-my-zsh
+.PHONY: all install clean purge
+
+# Main target for dotfiles.
+install: ${HOME}/.oh-my-zsh ${HOME}/.nvm ${HOME}/.emacs ${HOME}/.terminfo/x/xterm-truecolor ${LINKS_TARGETS}
+
+# Main uninstall target.
+clean: clean_.oh-my-zsh clean_.nvm clean_file_.emacs clean_.terminfo ${LINKS_CLEAN}
+
+# Purge removes the common cache folder created by various tools.
+purge: clean
+	cd ${HOME}; rm -rf ${PURGE_LIST}